Dinosaurs had sex. Fossil nests and eggs, as well as the ways today’s birds and crocodiles reproduce, leave no doubt on that ...

Some birds dance to attract a mate ... that non-avian dinosaurs had the same kind of anatomy, that any genitals would be held behind that cloaca, and [the Psittacosarus] is confirmation [of ...

Fossils provide scientists with a few clues about how dinosaurs mated, had sex, and reproduced, but much is still left to the ...

This fossil exhibits a cloaca—a common cavity used for excretion and reproduction in modern birds, reptiles ... avian dinosaurs had the same kind of anatomy, that any genitals would be held ...

Scientists were slow to recognize that Covid spreads through the air. Some are now trying to get ahead of the bird flu. By Carl Zimmer Carl Zimmer has reported on pandemics since 2009 and is the ...

Sixty-six million years ago, at the end of the Cretaceous Period, an asteroid impact near the Yucat n Peninsula of Mexico triggered the extinction of all known non-bird dinosaurs. But for the early ...

A near complete skull fossil found in Antarctica has revealed the oldest known modern bird — a mallard duck-size creature related to the waterfowl that live by lakes and oceans today ...

A child in San Francisco who had red eyes and a fever had a probable case of H5N1 bird flu, according to the city’s Department of Public Health. The case was caught by routine surveillance.

Winter poses several challenges for birds. Scarce food supplies and limited water are just a few obvious challenges for nearly all of them. Extremely cold temperatures, strong winds, driving snow ...

After a year of rising bird flu cases among people in the United States, researchers are keeping a watchful eye on the H5N1 virus to slow further spread. Since early 2024, the country has recorded ...

Jan. 2, 2025 — Birds are the undisputed champions of epic travel -- but they are not the only long-haul fliers. A handful of bats are known to travel thousands of kilometers in continental ...

Tiny songbirds such as grosbeaks and warblers migrate thousands of miles, flying at night and resting during the day, to and from their wintering grounds—and unlike many larger birds ...