537 results
537 results for: Crows
- Humans
This snowbird is really going SOUTH
Many people of a certain age (like my folks) enjoy flying south to warmer climes when winter weather threatens. I’m also flying south this December — but not to warm up. As a guest of the National Science Foundation, I’ll be checking out summer in the really deep South: Antarctica. Temps expected at certain sites I’m scheduled to visit, such as the South Pole, threaten to surpass the worst that my hometown will encounter in the dead of winter.
- Animals
Collision Course
The tales of two ornithologists trying to prevent birds colliding with windows highlight the obstacles facing applied biology.
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When Birds Go to Town
Urban settings offer enterprising critters new opportunities — if they can cope with the challenges
- Life
Archaeopteryx wore black
Microscopic structures in an iconic fossil feather suggest that it was the color of a crow.
- Life
Microraptor’s true blue colors
The birdlike dinosaur had black, iridescent feathers that may have helped it attract mates.
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Letters
Defining the human species Having read “Humans benefited by interbreeding” (SN: 10/8/11, p. 13), I wonder if I have missed what, to me, seems a major change in the definition of “species.” I was taught that the attempted crossbreeding of animals of two different species could result in either no offspring or sterile offspring. If […]
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- Animals
Lost to history: The “churk”
More than a half-century ago, researchers at the Beltsville Agricultural Research Center outside Washington, D.C., engaged in some creative barnyard breeding. Their goal was the development of fatherless turkeys — virgin hens that would reproduce via parthenogenesis. Along the way, and ostensibly quite by accident, an interim stage of this work resulted in a rooster-fathered hybrid that the scientists termed a churk.
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- Life
Young elephant struck by idea
In a test of insight, a 7-year-old pachyderm finds a way to use toy cube to snag a fruity treat hung just out of reach.
- Health & Medicine
Digging into the roots of lupus
Two new studies implicate common white blood cells called neutrophils in this autoimmune disease.
