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Are Redpolls Just One Species?

10,000 Birds

That impressive number is a testament to the exponential advances in DNA-sequencing technology, but the researchers are quick to note it’s still less than 1% of the total genome.). Furthermore, another redpoll species found in Europe—the Lesser Redpoll—also had extremely similar DNA sequences.

Species 218
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How to Help Cerulean Warblers, Other Migrant Species, and Resident Birds in Costa Rica

10,000 Birds

A wonderful variety of bird species are waiting to be seen and among them are many a birder’s favorite avian group, the wood-warblers. Among the most desired bird species during May migration, brightly colored, beautiful and boldly patterned, how can a birder not get hooked on spring warblers? Great Green Macaw!

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Bird Talk: An Exploration of Avian Communication–A Book Review

10,000 Birds

There was a time when I thought each bird species had its own individual song. Then I found out that there was this vocalization called a ‘call,’ so I thought each bird species had its own individual song (but just the males) and individual call. There is so much here! How do they know?

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Some Hokkaido Winter Passerines

10,000 Birds

Given how far Hokkaido is from Europe, it seems a bit surprising how many bird species wintering on this Japanese island have a name starting with “Eurasian” Or how many of these species I have also seen in my parents’ garden in Germany. It seems extra-pair paternity is very frequent in this species.

Iran 181
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The Shorebirds of North America: A Natural History and Photographic Celebration–A Book Review

10,000 Birds

My feelings about shorebirds came back to me a few days later, as I observed a mixed group of peeps and Dowitchers at Mecox Inlet, eastern Long Island, not far from where Peter Matthiessen once observed the shorebirds of Sagaponack, the stars of the first pages of his classic The Shorebirds of North America (1967). my face betrayed me. “I

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Research and Birding at Elkhorn Slough

10,000 Birds

I asked Virginia Guhin, Education Programs Coordinator of the Elkhorn Slough National Estuarine Research Reserve (ES NERR). I had never seen this species of kite before, but Guhin explained that they often hunted in the natural acres of the reserve. “What’s that?” Guhin knew without binoculars, “ White-tailed Kite ,” she identified.

Research 101
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Endangered Species Act: Potential Downlisting for Hawaiian Goose (nene)

10,000 Birds

More than 50 years ago, the Hawaiian Goose (Nene) was one of the first birds listed under the Endangered Species Act, part of the inaugural “ Class of 1967 ”. Under the Endangered Species Act, any listing, uplisting, downlisting, or removal from a list requires a formal “rulemaking” process.