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Quoth the Ravens: We’re Ready for Our Close-up

10,000 Birds

Common Ravens tend to avoid nesting around lots of humans. Why else would they build their nest, which already contains two eggs, on the fire escape of the college’s science center? Which is what makes the Ravencam so special, according to Professor Nicholas Rodenhouse, who teaches environmental science and biological sciences.

Puffins 245
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Birding the Datang area, Yunnan

10,000 Birds

I usually restrict my unfair jokes to humans. A paper on the species asks the important question “Does nest sanitation elicit egg rejection in an open-cup nesting cuckoo host rejecter?” ” So, either just a fake egg or a fake egg and trash (a peanut shell). ” That seems a bit unfair to me.

Eggs 246
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Bird Butts and Other Matters

10,000 Birds

The local Bald Eagles are getting busy, I suspect there is an egg in the nest. There is a bit of science news. The Izu scincid lizards (Plestiodon latiscutatus) that inhabit the four Japanese Izu Islands with only bird predators are drab brown, mature later, lay small clutches of large eggs, and hatch large neonates.

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Every sperm is sacred

10,000 Birds

(If you’re feeling particularly science-y, the full paper is here.). 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”.)

Zebras 145
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Why Do Penguins Wear Tuxedos?

10,000 Birds

They have special adaptations to stay warm and to keep their eggs and chicks warm. However, we now know that human ancestors became upright first, and were bipedal for millions of years before they started to use tools extensively, and then another million years went by before their brains started to evolve a significantly larger size.

Penguins 251
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Birds and Us: A 12,000 Year History from Cave Art to Conservation–A Book Review

10,000 Birds

They may be about bird eggs ( The Most Perfect Thing: The Inside (and Outside) of a Bird’s Egg , 2016), or a 17th-century ornithologist ( Virtuoso by Nature: The Scientific Worlds of Francis Willughby, 2016), or How Bullfinches learn songs from humans ( The Wisdom of Birds: An Illustrated History of Ornithology.

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Stuck in the middle (of the AOU/COS meeting)

10,000 Birds

Other hardy souls signed up for an early morning “Ostrich Run” 5k, with the prizes beinging–you guessed it–actual ostrich eggs. Emptied of their contents, of course.). A few days later, I was the assistant (a glorified gofer , if you will) for a morning-long session on migration.

San Diego 235