After consulting texts on bird anatomy, O’Connor realized what they were: oral papillae. “Imagine if the flesh on the roof of ...

Flying is really hard work. Compared to walking, swimming, or running, flying is the form of movement that takes the most energy and requires the most calories. That means that birds have had to ...

One of Earth’s first birds had modern bird-like mouth features that evolved to handle food efficiently and meet the energy ...

Differences among the collection of bacteria and other microorganisms that live within birds' digestive tracts -- their gut microbiomes -- are not primarily driven by diet diversity, contrary to a ...