Hummingbirds are among the smallest birds, and they are known for being beautiful, petite, and fast. After all, they can beat their wings up to 80 times a second! Like many creatures in the animal ...
Smithsonian Magazine on MSN
These Male Hummingbirds Evolved Straighter, Sharper Bills So They Could Better Joust for Mates
While female green hermit hummingbirds have curved bills, males’ straighter mouthparts are built for stabbing one another, a ...
A green honeycreeper spotted on a farm in Colombia exhibits a rare biological phenomenon known as bilateral gynandromorphism. By Emily Anthes Colombia is a bird watcher’s paradise. Its stunningly ...
Sexual behavior is one reason why female mammals typically live longer than their male counterparts, according to a new study. Researchers from Germany, Denmark, France, Hungary and Belgium analyzed ...
Estrogen derived from the ovaries transforms the default (primitive) male-type feathers into female-type feathers by regulating the hormone systems within the feather follicles. Birds possess unique ...
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