evolution

Why Some Hummingbird Females Evolved To Resemble Males A Puzzle

Why Some Hummingbird Females Evolved To Resemble Males A Puzzle

Some female white-necked jacobin hummingbirds have male-like plumage and mimic male appearance — but not male behavior, researchers report

Every Bird Has A Dinosaur Moment Just Before Hatching

Every Bird Has A Dinosaur Moment Just Before Hatching

The bird pelvis is an example of terminal addition, a biological mechanism in which ancestral features continue to appear in an animal until late in its development.

Why The Duck-billed Platypus Sweats Milk

Why The Duck-billed Platypus Sweats Milk

When Europeans first came upon it in the 1700s, naturalists believed Australia’s duck billed platypus must be a hoax, stitched together by some prankster taxidermist.