Modern birds have a highly specialized and efficient digestive system, which facilitates their high metabolism and underpins their capacity for aerial locomotion 1,2. Several unique features ...

The appropriate structure of the digestive tract is crucial for individual adaptation to ecological conditions. In birds, the length of the small intestine, responsible for food absorption, is ...

UNIVERSITY PARK, Pa. — Differences among the collection of bacteria and other microorganisms that live within birds’ digestive tracts — their gut microbiomes — are not primarily driven by diet ...

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 recently ...