The number of eggs a bird lays — its clutch size — varies greatly among species. You might think every species should simply lay lots of eggs because that would increase the odds of more young birds ...

On a remote speck of land in the middle of the Pacific, a single seabird has quietly rewritten what scientists thought they ...

A once-extinct bird is laying eggs in the wild for the first time in nearly 40 years. Sihek, a now-endangered bird returned to the wild in 2024, has laid wild eggs in its new home in Hawaii, according ...

Q. I saw a photo of different kinds of bird eggs and noted not only the obvious, that smaller birds lay smaller eggs, but also that some bird eggs are elongate, whereas others are more rounded. What ...

What is smaller than the width of a dime and weighs less than half a gram? That would be the egg of an Allen’s hummingbird. This tiny bird lays tiny eggs and lives in tiny nests. We are fortunate ...

Nests are generally thought of as a bird’s home, but it is more appropriate to consider them a nursery for raising baby birds. S.K. Winnicki, a Ph.D. candidate in avian evolutionary ecology at the ...

Pablo Capilla-Lasheras has received funding from the Biotechnology and Biological Sciences Research Council (UK) and currently works at the University of Glasgow. Tswalu Kalahari Reserve is a ...

Southeast area residents of Woodland residents may be fighting a losing battle against those “no-see-ems” swarming out of the Yolo Bypass this time of year. But the birds which feed in part on the ...

CHICAGO — It’s springtime, and the birds are chirping as they begin to build their nests. Researchers say the hands-on clock is turning back, though it happens like clockwork each year. Many species ...

Black birds with a greenish sheen and brown heads sometimes visit my yard during spring migration. These are male brown-headed cowbirds, and they often arrive in mixed flocks of red-winged blackbirds ...