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A Guide to Some Possible Bird Species Splits in Costa Rica

10,000 Birds

These and several other species might end up being armchair ticks if and when we take a closer look at their evolutionary history. Taxa that could end up being split into one species occurring north of the Isthmus of Tehuantepec, and one south of the isthmus. (2). Two subspecies of the same species that differ within Costa Rica. (4).

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314 U.S. Bird Species Threatened — Many with Extinction — by Global Warming

10,000 Birds

Like any birder visiting a new place, I had a target species list I was hoping to seek out during the one day I had available between business commitments. The experience was marvelous — but it also weighed heavily on me. In June, I visited North Dakota for the first time. That’s one of my photos above. Black Rosy-Finch.

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How The Bird Got Its Beak

10,000 Birds

The feature distinguishes birds from other species; All birds have them, no other species do. Beaks vary across different kinds of birds, and this great diversity in beaks is part of the great diversity of the 10,000+ species of birds that exist today; Beaks thus facilitated the diversification of birds. So how did beaks evolve?

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Shark Attack Experiment: LIVE

4 The Love Of Animals

Nat Geo Wild is airing an amazing show tonight called Shark Attack Experiment: LIVE! It is home to some of the most concentrated and diverse shark populations in the world, including species with a reputation for attacking people, such as great white, bull, tiger, black tip, ragged tooth and dusky sharks. Will you be tuning in?

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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. I do wish there was more about research on female bird song.

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Millions of Animals Used in EU Experiments

Critter News

Around 12 million animals are used each year in the European Union (EU) for research purposes. This became clear from a report addressed at the European Parliament (EP) session on May 5–7, which seeks to vote on a directive concerning animal research. I really hope this passes.

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Pigeons have tiny compasses in their heads

10,000 Birds

Knowledge is more likely to be shared via shared experience than the exchange of data, though both happen. Experiments had been done which involved strapping magnets to the heads of homing pigeons to see if you could confuse them. The same researcher then did the same thing but with big magnets strapped to the children’s heads.