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Every sperm is sacred

10,000 Birds

By studying Zebra Finches and domestic chickens, the scientists discovered that multiple sperm appear necessary for a fertilized egg to progress to the embryo stage (a process called “polyspermy”.) This differs from humans and other mammals, in which the addition of extra sperm essentially destroys the egg.

Zebras 145
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Pheasant-tailed Jacana courtship dance

10,000 Birds

A bright flash of white caught my attention in this lilly-choked wetland Closer investigation revealed a stunning male Pheasant-tailed Jacana perched atop a female. When the female is ready to lay eggs, she will deposit a clutch of eggs in a nest built by each of her males and that is the end of her role in reproduction.

Sri Lanka 192
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The Secret Perfume of Birds: Uncovering the Science of Avian Scent–A Book Review

10,000 Birds

Challenging at times, especially for us nonscientists, but Whittaker very smartly combines explanations of scientific concepts and processes with her own thoughts and feelings about the work, the intellectual history that preceded it, and the people she works with. There’s also roller derby stuff. It is also a bit misleading.

Science 227
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Vote Now for Awesome Ornithology Projects!

10,000 Birds

Peripatetic ornithologist Nick Sly has long been a friend of the blog here and has contributed such classics as Green-rumped Parrotlets from Egg to Adult and Forpus passerinus and the Ornithologists of Masaguaral. What are the mechanisms by which this occurs? And what cues do they use to do so? A junco thermoregulating in a snow bank.

Panama 214
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The Great Hummingbird Nest Heist

10,000 Birds

Of course, that certainly piqued my interest, so I closed the store immediately and went to investigate. The last thing I wanted to do was disturb her so I chose to stay quite a ways away, using a long lens to record the process. Once the nest was done, she began sitting on it, preparing to lay her eggs.

San Diego 175
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Are Farm Animals Usually Killed in a Humane Manner?

Critter News

There is an abundance of information on the web about undercover investigations, livestock conditions, slaughter procedures, etc. And if you ever drive around an egg farm, hog farm, slaughterhouse, feeding lot, etc., Animals are raw materials to process for product. There are many gruesome pictures too. It’s not cost-effective.

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From Today's New York Times

Animal Ethics

The meat and dairy industries want to keep their operations away from the public’s discriminating eyes, but as groups like PETA and the Humane Society have shown us in their graphic and disturbing undercover investigations, factory farms are mechanized madness and slaughterhouses are torture chambers to these unfortunate and feeling beings.