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Warblers that Warble

10,000 Birds

Like the Common Yellowthroat , the Yellow Warbler breeds no further south than the central Mexican highlands. But as I started to research this post, I was reminded that I actually live in the center of this Warbler’s range. southwest, but it is a permanent resident in western Mexico and parts of Central America.

Mexico 337
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Watch for Shorebirds with Colored Flags!

10,000 Birds

As I write this note, probably hundreds if not thousands of shorebirds are heading south to the wintering grounds. Some make stopovers along Florida’s coast, others fly straight from stopovers in the northern states to the coast of South America. I am an associate with this NGO and follow the progress of the banding program.

Peru 228
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Rice Ain’t Necessarily Nice for Wintering Bobolinks

10,000 Birds

A new study published in The Condor analyzed the feathers of Bobolinks to determine what they eat after they leave their North American breeding grounds and fly south for the winter. The research suggests that rice emerges as an important food source late in the winter, just as harvesting time—and northern migration time—are at hand.

Advocacy 100
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How Birds Evolve: What Science Reveals about Their Origin, Lives, and Diversity: A Book Review by a Non-Science Person

10,000 Birds

He also believes that we are living in an era of incredible scientific research, one in which new genetic technology and findings from diverse scientific disciplines have turned assumptions upside down, opened up new lines of thought, and provided answers, or at least probable answers, to many of our questions about why birds do the things they do.

Science 214
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A Guide to Some Possible Bird Species Splits in Costa Rica

10,000 Birds

Taxa that could end up being split into one species occurring north of the Isthmus of Tehuantepec, and one south of the isthmus. (2). A species that lives in both Costa Rica and South America but might be two separate species. (3). Bird species that require further research. A Common Chlorospingus from Costa Rica.

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The origins of tanagers, warblers, and sparrows are coming into focus

10,000 Birds

The authors argue that most major groups, including the sparrows, wood-warblers, blackbirds, and cardinals then diversified in North America and subsequently colonized South America in a series of overwater (before the Isthmus of Panama had formed) or overland dispersal events. The paper is by leading researchers F.

Sparrows 252
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Is the White-naped Xenopsaris Migratory? or The Limits of Citizen Science

10,000 Birds

It is apparently uncommon across most of its wide range in the shrublands of South America, little noticed and little noted, and sources are pretty thin, as they are for many birds in places like South America. ” I can’t just put this into Wikipedia – it’s original research.

Science 108