Tag Archives: nature

Hummingbird numbers spike as summer season advances toward autumn

 

From the shade of my front porch, I watched about a half dozen ruby-throated hummingbirds cavort among the blooms of a large mimosa tree on a recent evening. The tree apparently holds an extraordinary attraction for the hummingbirds, as well as the pipevine swallowtail butterflies and other pollinating insects. I enjoyed watching the greenish hummingbirds zip among the profusion of pink mimosa blossoms, which have always reminded me of the thin fiber-optic filaments popular on some artificial Christmas trees and other decorations during the holidays. To draw so many different insects, as well as hummingbirds, the mimosa blooms must provide a rich source of nectar.

While I have almost wilted from the recent extended heat wave, the ruby-throated hummingbirds at my home appear to have downright thrived during these sunny, hot days of mid-summer. Once again, these tiny birds must have enjoyed a successful nesting season, based on the numbers of young hummers visiting both my feeders and flowers. The uptick in the presence of hummingbirds took place without much fanfare, but after a couple of months of “hummer doldrums,” it was impossible for any observer to miss the way these tiny birds have become much more prevalent in recent weeks.

Coinciding with this resurgence of the hummingbirds at my home, I received a post on Facebook from Philip Laws, a resident of Limestone Cove. Apparently, Philip, too, has noticed that hummingbird numbers are on the rise.

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Photo by Bryan Stevens • A male ruby-throated hummingbird perches near a feeder that he is ready to defend from all comers.

“Seemed like a slow hummingbird summer,” he wrote. “But two days ago the babies started hitting the feeders and everything looks much brighter!”

I also enjoyed a recent phone conversation with Erwin resident Don Dutton, who wanted to know why hummingbirds have been scarce around his home this summer. I’ve noticed fewer hummers at my own home this summer, but it’s natural for numbers to fluctuate from year to year. I anticipate that numbers will rise as hummingbirds begin migrating south again in the coming weeks. At that time, the adult hummers will be joined by the young birds from this season’s successful nesting attempts.
Don shared that when he lived out west, he often visited Mount Charleston near Las Vegas, Nevada, where he saw swarms of hummingbirds comprised of various different species. In the eastern United States, the only nesting species is the Ruby-throated Hummingbird.

For readers who have felt slighted by hummers so far this season, perhaps it’s time to try your luck again at attracting them. The surest method is to keep a sugar water feeder available to attract them on their way south later this summer and into the fall. A visit to a plant nursery can also provide an abundance of blooms to use to lure hummers to your gardens. Some late-blooming summer flowers attractive to hummingbirds include canna, cardinal flower, gladiola and crocosmia. While the widely held belief is that hummingbirds prefer red blooms, they will gladly visit any flower that rewards them with a sip of nectar.501-7006-blk

Late summer and early fall, even more so than spring, are usually the best times to enjoy hummingbirds, when they are usually at their most common. There are a couple of reasons for this annual increase. First, nesting female hummingbirds have reared their young, which then begin visiting feeders and gardens to compete with their elders at flower blossoms and sugar water feeders. Second, adult males and females that migrated farther north usually begin swinging southward again in late July and early August.

According to the website hummingbirds.net, mature male hummingbirds usually follow an earlier departure date than adult females and immature birds. The organizers of the website theorize that by leaving early in the fall, the adult male hummingbirds free up resources for their developing offspring. After all, it’s the least they can do since adult male hummingbirds play absolutely no role in helping females with the process of nesting and rearing young. All young hummingbirds are, in effect, raised by single mothers.

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Photo by Bryan Stevens • A male ruby-throated hummingbird perches at a feeder for a sip of sugar water.

Despite their tiny size, hummingbirds are tough birds. One species, the rufous hummingbird, ranges as far north as Alaska. Several tropical species have adapted to the frigid conditions that occur at the higher elevations of the Andes Mountains.

As I have done in years past, I advise a patient but proactive approach for attracting hummingbirds. Keep feeders readily available. If possible, offer flowers, too. Don’t keep your landscape too tidy. A perfectly manicured lawn is like a desert for hummingbirds. Provide some shrubs and trees to provide cover and perching branches. Water features, particularly waterfalls and fountains, are also a reliable means of attracting hummingbirds, as well as other birds.

If you have felt slighted by hummers so far this year, keep a sugar water feeder available to attract them on their way south later this summer and into the fall. To share a sighting, make a comment, or ask a question, send email to ahoodedwarbler@aol.com.

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Bryan Stevens has been writing about birds since 1995. To learn more about birds and other topics from the natural world, friend Stevens on Facebook at https://www.facebook.com/ahoodedwarbler. If you have a question, wish to make a comment or share a sighting, email ahoodedwarbler@aol.com.

Sleek elegance of cedar waxwing wins bird many fans

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Photo by Annette Bryant • A cedar waxwing plucks a fresh blueberry.

I still remember my first look at a cedar waxwing. Sleek as silk, wearing a mask like a bandit, with a jaunty crest atop its head, this fairly common bird commands attention when making an appearance in a yard or garden. Of course, it’s usually not alone, more often traveling as a member of a larger flock that can number as high as dozens or even hundreds of individuals.

Cedar waxwings win fans almost anywhere they go. Chances of luring these birds to your home and property can increase by offering some essential requirements. Tall trees, especially those that bear fruit, are attractive to these sociable birds. It’s more often water, not food, however, that will bring a flock of these birds close. They love a good splash in a bath, whether the source is a shallow stream or an ornamental pool set into the landscape.

As noted, they travel in often sizable flocks, usually in search of new food sources. The many members comprising a flock can deplete resources in a remarkably short time. During the winter season, I’ve watched a flock of waxwings make short work of a harvest of berries from a holly tree. Their nomadic lifestyles makes it nearly impossible to predict where cedar waxwings might make an appearance.

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Photo by Bryan Stevens • A cedar waxwing perches on a branch.

Based on early observation, the wild cherry trees scattered around the edges of my yard are fully laden with berries. As they ripen in late August and into September, the crop will likely attract waxwings as well as a host of other species.

Why is the term “waxwing” applied to this bird? According to the website All About Birds, the name comes from the waxy red secretions found on the tips of wing feathers. The site also notes that the precise function of these waxy tips is not known. There’s speculation among some experts that the bright red tips on the feathers could play a role in helping waxwings attract mates.

The cedar waxwing has few relatives. Worldwide, there are only two other species: the Bohemian waxwing, of the northern forests of Eurasia and North America; and the Japanese waxwing, found in such northeast Asian countries as Japan, Korea and China.

Although it’s classified as a songbird, the cedar waxwing does’t truly produce a vocalization that anyone would contend qualifies as a song. They are, however, very vocal birds, producing shrill, high-pitched notes as they pass through the upper branches of tall trees.

As much as the waxwing has a fondness for fruit, it’s also a bird that would have made an excellent flycatcher. Flocks of these birds will often congregate in trees near the edge of a pond, garden or yard — anywhere winged insects might be found in good numbers — in order to hawk insects on the wing. A waxwing will sally forth from a branch, snatch its prey in mid-air, and return to its perch for a quick snack.

Perhaps because of the late-summer abundance of bugs and berries, cedar waxwings are known for nesting late into the summer. They’re certainly not among the birds impatient to begin nesting as soon as temperatures turn mild in the spring.

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Photo by Bryan Stevens • A pair of cedar waxwings                           hawk for insects near a pond.

Although a female brown-headed cowbird succeeds on occasion at slipping an egg into a waxwing nest, that attempt at foisting offspring onto unwitting foster parents is doomed. According to All About Birds, baby cowbirds will starve on the diet high in fruit fed to waxwing babies.

Now that you know a little more about this sociable and elegant songbird, keep an eye out for cedar waxwings visiting your yard or garden. I know my own wild cherry trees await their arrival.

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Bryan Stevens lives near Roan Mountain, Tennessee. To learn more about birds and other topics from the natural world, friend him on Facebook at https://www.facebook.com/ahoodedwarbler. If you have a question, wish to make a comment or share a sighting, email ahoodedwarbler@aol.com.

Keep a look out for wandering waders during late summer season

Summer heat and humidity make the summer season my least favorite one for birding, but every season brings birding surprises. I was reminded of this fact when Larry and Amelia Tipton sent me a recent email asking for help with the identification of some birds near their home.

Attaching a photo with their email, the Tiptons wrote, “These birds showed up a few days ago and we cannot identify them. We would like to know what they are.”

When I opened the photo, I realized that the birds captured in the image would not be considered out of place if the Tiptons lived near the coast of the Carolinas, Georgia or Florida. The birds in the photo, however, were somewhat unexpected in the foothills of western North Carolina near their home in the town of Old Fort.

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Photo Courtesy of  Larry and Amelia Tipton • Immature white ibises in a field near the Catawba River in North Carolina.

“We live on a farm near the Catawba River but have mostly woodland and fields,” the couple added. “We do not have a pond on our property but have a branch and a larger creek nearby.”

I wrote back and told the Tiptons that the birds they photographed were young white ibises. I informed the Tiptons that the two young ibises are likely testing their wings, so to speak, after leaving the care of their parents. If they like the area, and it sounds like they do, they may decide that the branch and creek are just what they need.

I received a followup email. “We sort of knew these were water birds but were surprised to find them so far away from marsh or wetlands or the ocean,” the Tiptons wrote. “We thought maybe a storm blew them off course during flight.”

While a diverting storm can’t be ruled out, it’s normal behavior for young wading birds to disperse far and wide after leaving the nest. North American waders, or wading birds, include such long-legged species as herons, egrets, bitterns, ibises, storks and spoonbills. Most species are associated with wetlands or coastal areas.

Late summer birding is usually a period of doldrums as heat and humidity can discourage birders as well as diminish bird activity. However, it’s also the time of year when birders can make some unexpected surprises as wandering waders, such as the ibises discovered by the Tiptons, explore uncharted territory.

Other waders this season showing up in unexpected location have included a wood stork found by Linda Walker in Polk County, Tennessee. Likes the ibises in North Carolina, the stork was confining its activities to a small branch bordered by heavy vegetation. These branches are a far cry from the usual wetland haunts of these two species.

Overall, the white ibis and wood stork have some superficial similarities. They are both long-legged white birds with black wing tips and unusual down-turned bills that they use to probe for food, which largely consists of fish and other aquatic prey.

The latter is North America’s only native stork. According to the National Audubon Society, Florida once provided a stronghold for the wood stork in the United States. Unfortunately, the population crashed in the 1990s, decreasing from around 150,000 birds to fewer than 10,000. In recent years, numbers have increased and wood storks have expanded their breeding range into South Carolina. Wood storks are nearly four feet tall, making them one of the tallest of the waders. Wood storks have a dark, featherless heads, giving them a resemblance to vultures. For the most part, they’re rather grotesque birds when observed at close quarters. Soaring overhead on thermal updrafts, wood storks look quite graceful and even majestic thanks to their white plumage and black accents. A wingspan of 65 inches gives them the means to soar easily.

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Photo by Bryan Stevens 
Worldwide there are 19 species of storks, but the wood stork (pictured) is the only native stork   found in the United States.

The Audubon Society identifies the white ibis as one of the most numerous wading birds in Florida, but the bird is common also in other parts of the southeast with appropriate wetland habitat. Like the wood stork, the ibis has declined in Florida in recent decades largely as a result of human encroachment. The white ibis looks like a bird that could have been invented by Dr. Seuss. The all-white plumage is contrasted by pinkish-orange legs, a reddish-pink bill and bright blue eyes. In flight, the white ibis shows black feathers on the edges of its wings.

The affinity for water and wetlands relates to the diet of most waders, which consists of fish and other aquatic prey such as amphibians, crustaceans and even insects. For the remainder of July and into August and September, birders should monitor ponds, small lakes, rivers and even branches and creeks for any wandering waders. For instance, I once made a trip to a park in Greeneville, Tennessee, to observe a pink-hued roseate spoonbill that had made a rare stopover in the region. While that observation took place nearly 20 years ago, I remember vividly finding the pale pink bird playing odd man out among a flock of several dozen Canada geese as a soft rain drizzled from an overcast sky. Although many of the waders cling to coastal habitats, they have wings like other birds and know how to use them. Other waders have been known to show up in unlikely locations, including birds such as tri-colored heron, limpkin and snowy egret.

Of course, I hope to hear from any readers lucky enough to glimpse one of these unanticipated finds. Enjoy your birding.

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Bryan Stevens lives near Roan Mountain, Tennessee. To learn more about birds and other topics from the natural world, friend Stevens on Facebook at https://www.facebook.com/ahoodedwarbler. He is always posting about local birds, wildlife, flowers, insects and much more.

Skittish nature means getting to know towhees takes some effort

Mary Beierle, who lives in Elizabethton, Tennessee, sent me an email to share information about recent nesting activity by a pair of Eastern towhees at her home in the Stoney Creek community.

“Just wanted to tell you that we have a nesting pair of Eastern towhees here in Stoney Creek,” Mary wrote in her email. “This is the first year they have stayed after a brief visit in early spring.”

While not as many people may be familiar with Eastern towhees as, say, northern cardinals or ruby-throated hummingbirds, those who have made an acquaintance with these unusual songbirds are, like Mary, captivated instantly.

“I am very fond of these birds,” she noted in her email. “The male is really beautiful and the female is also lovely, although not as colorful as the male.”9780307370020-us 2

Eastern towhees spend much of their time on the ground and hidden in thickets and hedges. As a result, other common names for this bird includes “ground robin” and “swamp robin,” which refer to some of this bird’s habitat preferences. They’re not thrushes, however, and are unrelated to thrush family members such as American robin, Eastern bluebird and wood thrush. Instead, towhees are one of the larger members of the sparrow family.

Mary noted some of this bird’s typical behavior from her observations. “I love the way they hop around,” she wrote. “They are very skittish, and I can’t get them to stand still for a photo.”

At my own home, I have a pair of Eastern towhees currently occupied with nesting. When I get too close, both parents claim an elevated perch and call in agitation as long as I am in the vicinity. The towhees are just one of many nesting birds so far this spring. Other nesting birds in my yard or the surrounding woodlands this spring have included tree swallow, Eastern bluebird, brown thrasher, song sparrow, American robin and Eastern phoebe.

The Eastern towhee represents a bit of a milestone in my personal birding history. I saw and identified my first Eastern towhee in early spring in 1993. At that time, I was struggling to identify some of the common visitors at my feeders. I was acquainted with white-breasted nuthatches, blue jays, downy woodpeckers, Carolina wrens, dark-eyed juncos and a handful of other birds. When I looked out a window and saw this bird feeding on the ground, the morning sun illuminating his dramatic plumage of black, white and rufous red, I was immediately aware this visitor represented something new and unexpected.

Consulting a field guide — I was using the Golden Nature Guide to the Most Familiar American Birds at the time — I soon found a painted illustration of a rufous-sided towhee that matched in every detail the bird I had just observed on the ground beneath a blue spruce in my yard.

Many of the older field guides still list the Eastern towhee as “rufous-sided towhee” which is actually more descriptive of the bird’s appearance than the word “eastern.” In 1995, ornithologists renamed the rufous-sided towhee to Eastern towhee and also separated the Eastern species from its western counterpart, the spotted towhee. Until that point, these two towhees had been considered different races of the same species. In 2003, I saw a spotted towhee during a visit to Salt Lake City, Utah. The bird looks almost identical to an Eastern towhee except for considerable white spotting — hence its common name — on the bird’s back.

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Male Eastern Towhee sings from a perch.

Male and female Eastern towhees each possess a stately if subtle beauty. Males have a black hood. The black coloration extends into the back and tail. The belly is white and the sides are flanked with a rusty-red color. In flight, their black tails are bordered with white feathers, which produces a dramatic flash of contrasting colors. The female Eastern towhee is an attractive bird in her own right. She shares the rufous sides and white coloration that are present in the male’s plumage. However, the male’s black feathers are replaced by a warm, chocolate brown plumage in the female. In addition, their bright red eyes help set these birds apart from other songbirds.

The Eastern towhee is one of my favorite yard birds, but not just because of its dramatic appearance. These birds also have some instantly recognizable vocalizations. With the arrival of spring, the males will seek elevated perches for extensive singing bouts to attract mates and establish territories. Their song has been interpreted, quite accurately, as an emphatically delivered “Drink your tea!” They also have some alarm notes, such as “Chew-ink” and “Toe-Hee,” which provides the basis for this bird’s common name.

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Female Eastern Towhees are usually more retiring than males.

They are often found in the same sort of tangled habitat favored by Northern cardinals, gray catbirds and brown thrashers. To attract these birds, simply refrain from doing too much to alter your landscape. For instance, don’t manicure every square inch of your yard. Leave some wild corners that will run rampant and provide a luxurious tangle for birds that thrive under cover. In the southern United States, towhees prosper in scrub palmetto habitats. In our region, any hedge or bramble thicket will provide adequate cover to make these birds feel welcome.

While they may never completely lose their wariness, towhees will become gradually more accepting of sharing a yard with people. It helps that they will readily visit feeders for sunflower seeds. If you succeed in attracting a family of Eastern towhees to your yard and garden, I am confident you’ll not be disappointed.

Elizabethton summer bird count sets new record

The Lee and Lois Herndon Chapter of Tennessee Ornithological Society, also known as the Elizabethton Bird Club, conducts two summer surveys of area bird life. Last week, the results of the Unicoi County Summer Bird Count were explored. This week, the focus is on the Carter County Summer Bird Count, which set a new record. The 24th Carter County Summer Bird Count was held Saturday, June 10, under favorable weather conditions with twenty observers in six parties. A record high of 123 species were tallied, besting the previous high of 121 species set in 2013. The average over the previous 23 years was 112 species, ranging from a low of 105 to as many as 121.

Long-time count compiler Rick Knight said highlights of the count included seven Ruffed Grouse, including chicks, as well as such species as Yellow-crowned Night-heron, Bald Eagle, Red-shouldered Hawk and 21 species of warblers.

The American Robin, with 392 individuals counted, barely edged out European Starling, with 389 individuals counted, for most numerous bird on this year’s summer count.

Making the Summer Bird Count for the first time was Red-headed Woodpecker, represented by a pair of birds nesting at Watauga Point Recreation Area on Watauga Lake near Hampton. Other notable songbirds found included Vesper Sparrow, Blue Grosbeak, Red Crossbill and Pine Siskin. I counted birds with Chris Soto, Mary Anna Wheat, and Brookie and Jean Potter at such locations as Wilbur Lake, Holston Mountain and Sycamore Shoals State Historic Park.

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Photo by Bryan Stevens • Birds like this Red-bellied Woodpecker helped set a new record for most species on one of the Elizabethton Summer Bird Counts.

The count’s total follows:
Canada Goose, 258; Wood Duck, 7; Mallard, 125; Ruffed Grouse, 7; Wild Turkey, 21; and Double-crested Cormorant, 1.
Great Blue Heron, 10; Green Heron, 1; Yellow-crowned Night-heron, 1; Black Vulture, 7; and Turkey Vulture, 28.
Sharp-shinned Hawk, 1; Cooper’s Hawk, 7; Bald Eagle, 2; Red-shouldered Hawk, 3; Broad-winged Hawk, 7; and Red-tailed Hawk, 5.
Killdeer, 2; Rock Pigeon, 37; Eurasian Collared Dove, 1; Mourning Dove, 137; Yellow-billed Cuckoo, 4; Eastern Screech-owl, 2; Great Horned Owl, 2; Barred Owl, 2; Common Nighthawk, 1; Chuck-will’s-widow, 5; and Whip-poor-will, 8.
Chimney Swift, 80; Ruby-throated Hummingbird, 17; Belted Kingfisher, 3; Red-headed Woodpecker, 2; Red-bellied Woodpecker, 16; Yellow-bellied Sapsucker, 2; Downy Woodpecker, 12; Hairy Woodpecker, 4; Northern Flicker, 18; and Pileated Woodpecker, 24.
American Kestrel, 1; Eastern Wood-Pewee, 17; Eastern Phoebe, 71; Acadian Flycatcher, 20; Alder Flycatcher, 2; Willow Flycatcher, 1; Least Flycatcher, 5; Great Crested Flycatcher, 5; and Eastern Kingbird, 17.
White-eyed Vireo, 2; Yellow-throated Vireo, 2; Warbling Vireo, 1; Blue-headed Vireo, 41; Red-eyed Vireo, 126; Blue Jay, 69; American Crow, 227; and Common Raven, 7.
Northern Rough-winged Swallow, 45; Purple Martin, 53; Tree Swallow, 149; Barn Swallow, 129; and Cliff Swallow, 113.
Carolina Chickadee, 54; Tufted Titmouse, 71; Red-breasted Nuthatch, 12; White-breasted Nuthatch, 16; Brown Creeper, 2; House Wren, 79; Carolina Wren, 67; Blue-gray Gnatcatcher, 28; and Golden-crowned Kinglet, 12.
Eastern Bluebird, 88; Veery, 32; Hermit Thrush, 4; Wood Thrush, 43; American Robin, 392; Gray Catbird, 38; Brown Thrasher, 21; Northern Mockingbird, 42; European Starling, 389; and Cedar Waxwing, 64.
Ovenbird, 70; Worm-eating Warbler, 9; Louisiana Waterthrush, 9; Golden-winged Warbler, 13; Black-and-white Warbler, 26; Swainson’s Warbler, 2; Common Yellowthroat, 28; Hooded Warbler, 95; American Redstart, 6; Northern Parula, 25; Magnolia Warbler, 3; Blackburnian Warbler, 7; Yellow Warbler, 13; Chestnut-sided Warbler, 36; Black-throated Blue Warbler, 38; Pine Warbler, 3; Yellow-rumped Warbler, 1; Yellow-throated Warbler, 14; Black-throated Green Warbler, 26; Canada Warbler, 16; and Yellow-breasted Chat.
Eastern Towhee, 121; Chipping Sparrow, 78; Field Sparrow, 50; Vesper Sparrow, 1; Song Sparrow, 178; Dark-eyed Junco, 69; Scarlet Tanager, 31; Northern Cardinal, 94; Rose-breasted Grosbeak, 12; Blue Grosbeak, 2; and Indigo Bunting, 169.
Red-winged Blackbird, 77; Eastern Meadowlark, 11; Common Grackle, 84; Brown-headed Cowbird, 22; Orchard Oriole, 10; and Baltimore Oriole, 2.
House Finch, 26; Red Crossbill, 1; Pine Siskin, 5; American Goldfinch, 134; and House Sparrow, 27.

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I had a recent phone call with Erwin resident Don Dutton, who wanted to know why hummingbirds have been scarce around his home this summer. I’ve noticed fewer hummers at my own home this summer, but it’s natural for numbers to fluctuate from year to year. I anticipate that numbers will rise as hummingbirds begin migrating south again in the coming weeks. At that time, the adult hummers will be joined by the young birds from this season’s successful nesting attempts.

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Photo by Bryan Stevens • Numbers of Ruby-throated Hummingbird in the region tend to fluctuate each year, but people should see a spike in their numbers as the hummingbirds end summer nesting and start migrating south again.

Don shared that when he lived out west, he often visited Mount Charleston near Las Vegas, Nevada, where he saw swarms of hummingbirds comprised of various different species. In the eastern United States, the only nesting species is the Ruby-throated Hummingbird.

If you have felt slighted by hummers so far this year, keep a sugar water feeder available to attract them on their way south later this summer and into the fall. To share a sighting, make a comment, or ask a question, send email to ahoodedwarbler@aol.com.

 

 

Osprey’s fishy diet sets it apart from most other raptors

Jim and Tammie Kroll emailed me about a very interesting bird observation on the Virginia Creeper Trail last month.

They saw a bald eagle along the Virginia Creeper Trail on May 14. “It was between Alvarado and Damascus,” Jim wrote in the email. We got to see it at two different locations and watched it around 15 minutes at each location.”

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Photo by Jim and Tammie Kroll • This adult bald eagle was seen along the Virginia Creeper Trail.

He added that they talked to a woman who informed them that she also sees an eagle in the same area on the Creeper Trail.

The Krolls also shared a photo of the eagle. I’m always glad that to hear that observing the nation’s official bird is no longer a rare occurrence in the region. While I haven’t seen any bald eagles this year, I have observed a raptor that share many characteristics with them.

Ospreys, also known by the common name of “fish hawk,” occur worldwide. Ospreys migrate through the region in spring and fall, making sightings more likely along some lakes and larger rivers. I see them even more often when I travel to South Carolina, where these medium-sized raptors are common along the coast and in wetlands.

Some recently published books provide insight into the lives of bald eagles and ospreys. Teena Ruark Gorrow and Craig A. Koppie are the authors of the recent book, The DC Eagle Cam Project: Mr President and First Lady. This book profiles a celebrity pair of eagles that have nested for the past few years in U.S. National Arboretum in Washington, D.C.

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Front cover of a book by Teena Ruark Gorrow and Craig A. Koppie featuring photos of a nesting season in the life of a family of ospreys.

Gorrow and Koppie have also written other books together, including one offering a pictorial journey through an osprey nesting season. Titled “Inside an Osprey’s Nest,” this book provides an account of two fostered osprey chicks that receive new parents in a heartwarming, real-life account of a family of ospreys associated with the Chesapeake Conservancy Osprey Nest Cam.

During a recent interview, Gorrow shared that bald eagles and ospreys share more than a few things in common.

“The bald eagle, Haliaeetus leucocephalus, is America’s national bird and symbol,” Gorrow said. “It is a large raptor, or bird of prey, found only in North America. Also a raptor, the osprey, Pandion Haliaetus, is a large hawk found on every continent across the globe except Antarctica.”

Like the American bald eagle, Gorrow noted that ospreys experienced devastating health effects and reproductive failures from widespread human use of dangerous pesticides like DDT.

“By the 1970s, population numbers had plummeted to catastrophic levels for both eagles and ospreys,” she said. “Federal actions were put into place which imposed migratory bird protection and banned DDT. These measures, along with the work of dedicated scientists, conservationists and citizens, have helped these magnificent raptors recover.”

Gorrow said that when selecting a nest site, bald eagles and ospreys identify an area near water with a plentiful food supply and nearby trees. “With diets consisting mostly of fish, both require foraging areas rich in fishery resources,” she said.
During nesting season, ospreys and eagles are seen as competitors, even though food is abundant in the Chesapeake Bay region. “Bald eagles are opportunists and will usually pirate fish prey from osprey when given the chance,” Gorrow said.

Nesting season for eagles begins earlier than ospreys, so they have the upper hand in defending territories. “Eagle pairs in the Chesapeake Bay area usually lay eggs in mid-February, while the ospreys return from their southern wintering destinations around mid-March,” Gorrow said. “Ospreys generally build nests in March or April and lay eggs soon after.”

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Early naturalist and artist John James Audubon painted this work of art featuring an osprey with a fish held in its talons.

The two large raptors also demonstrate other distinct preferences.

“Bald eagles utilize living and dead (known as snags) trees as nest sites,” she said. “Eagles rarely tolerate humans near their nests.

“On the other hand, ospreys are relatively tolerant of humans and sometimes build nests on private pavilions or docks beside waterfront properties,” Gorrow continued. “They seem to favor artificial structures and often construct over-water nests on the steel supports of bridges, channel markers, navigational buoys, fishing piers, jetties, and manmade nesting platforms. Ospreys sometimes choose snags with an open treetop or claim tall, artificial structures resembling dead trees, such as towers, utility poles, television antennas, road signs and stadium lights. They also sometimes nest on chimneys and rooftops on uninhabited buildings.”

A more in-depth glance into the lives of ospreys is available in the book “Inside an Osprey’s Nest,” which retails for $24.99. When purchased through the Chesapeake Conservancy at http://www.chesapeakeconservancy.org, $10 from every purchase supports conservation programs along the Chesapeake Bay Watershed. The book is also available at http://www.schifferbooks.com, Amazon.com and other booksellers.

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To learn more about birds and other topics from the natural world, friend him on Facebook at https://www.facebook.com/ahoodedwarbler. He is always posting about local birds, wildlife, flowers, insects and much more.

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Photo by Bryan Stevens • An osprey perches in a tree along the Watauga River in Elizabethton, Tennessee.

Warblers exert special pull for many birders

KirtlandsWarbler

Photo by U.S. Fish & Wildlife Service • The Kirtland’s Warbler, while endangered, is slowly building its numbers with intensive human assistance. Nearly 50 different warbler species nest in the eastern half of the continental United States. The rest of the world’s warblers reside mostly in Central and South America.

I’ve been fascinated with the group of small, energetic songbirds known as warblers almost from the start of my time as a birder. Many birds have inspired poetry, but to me, the warblers are poetry. I suppose another, more down-to-earth part of my fascination is that a little effort is usually required to see these birds. Although many species of warblers spend the summer months in the region, few of them would really be described as backyard birds. That being said, I am also fortunate to live in a location surrounded by woodlands that are inhabited by several species of warblers in the months spanning April to September on the calendar.

Of course, it’s always gratifying to hear from readers who have also caught the “warbler bug” and find these tiny, colorful songbirds as fascinating as I do. Graham Gardner of Abingdon, Virginia, sent me a recent email about the warblers, an extensive family of neotropical migrants that happen to be among my favorite birds.

CanadaWarbler

Photo by Graham Gardner • A Canada warbler wears a dark necklace of feathers across its yellow breast.

“I just wanted to share another great birding experience that I recently had with my father this past weekend,” Graham wrote in an email sent on May 1. “As you know, the spring migration of neotropical migrants is upon us. My father and I decided to take a trip to Peaks of Otter Lodge in the heart of the Blue Ridge Mountains to attempt to observe some of the more difficult-to-find warblers that I had not yet checked off my life list.”
He reported that the trip was wildly successful.

“We observed 10 warbler species in total in just under two days of birding.” Among them were three species that were new for him: cerulean warbler, Blackburnian warbler, and bay-breasted warbler.

He also shared some photos. “These guys are really quite difficult to photograph,” he wrote. “They are either constantly on the move, bouncing from branch to branch, or they are high in the canopy staying mostly out of sight.”

Graham wrote that he looks forward to searching for warblers in the coming weeks as they continue to pass through, and in some cases settle in, our Appalachian Mountains.
I congratulated Graham for his success with some of my favorite birds. I also let him know that he succeeded with a bird — the cerulean warbler — that has been elusive for me over the years. It’s one of the few warblers that spend time in the eastern United States that I haven’t managed to add to my life list. The other two warblers I need are the Connecticut warbler and Kirtland’s warbler.

Cerulean 2

Early naturalist and artist John James Audubon painted this pair of cerulean warblers, a bird that he knew as the “Azure Warbler.”

 

“The cerulean was definitely the highlight of the trip for me,” Graham noted in a second email to me.

The cerulean warbler makes infrequent appearances in the region, but it has been observed as recently as the spring of 2016 at Steele Creek Park in Bristol, Tennessee. Some other locations — Frozen Head State Park, Edgar Evins State Park and Falls Creek Falls State Park — support breeding populations of this warbler within the Volunteer State.

Unfortunately, the cerulean warbler is one of the fastest declining songbirds in the United States. Habitat destruction in its breeding range in the Appalachian Mountains and its wintering range in South America is to blame for its plummeting numbers.

Among a family of several breathtakingly beautiful species, the cerulean warbler is one of the most exquisite of its kind in terms of appearance. Adult males have pale cerulean blue upperparts — hence the bird’s common name — and white underparts with a black necklace across the breast. They also show black streaking on the back and flanks.

Beyond its uncommon status, there are other reasons why it’s difficult to lay eyes on a cerulean warbler. First and foremost, cerulean warblers prefer to forage in the treetops. In that leafy, lofty habitat, observing these warblers can be difficult for ground-bound humans.

NoWaterthrush

Photo by Bryan Stevens • The Northern waterthrush is a warbler fond of foraging near slow, flowing water.

I’ve been very close to seeing a cerulean warbler twice. During a past Spring Naturalists Rally at Roan Mountain, Tennessee, several people watched a cerulean warbler flitting in some tall trees while I struggled unsuccessfully to get my binoculars on the rapidly moving bird. More recently, I was looking for birds with fellow birder Jean Potter along the Watauga River in Elizabethton, Tennessee, for a Fall Bird Count. She found a female cerulean warbler in a tree overhanging the river, but I failed to get my binoculars on the bird in time.

So, while my luck with cerulean warblers hasn’t changed (yet), I have seen several warblers at my home this spring, including hooded warbler, ovenbird, black-throated green warbler, black-and-white warbler and Northern parula. In addition, I’ve seen other warblers — yellow-breasted chat, Cape May warbler, yellow warbler and chestnut-sided warbler — at other locations in the region.

Black-and-WhiteWarbler

Photo by Graham Gardner • The black-and-white warbler, which is aptly named, is one of the most easily identified warblers.

The warblers are poetry written with splashes of movement and hints of color written across an often green background. While not easy to observe, they’re worth seeking out. Glimpsing one of these energetic songbirds is always a moment that puts a smile on my face — and in my heart.

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Bryan Stevens lives near Roan Mountain, Tennessee. To learn more about birds and other topics from the natural world, friend Stevens on Facebook at http://www.facebook.com/ahoodedwarbler. He is always posting about local birds, wildlife, flowers, insects and much more. If you have a question, wish to make a comment or share a sighting, email ahoodedwarbler@aol.com.