WEST LAFAYETTE, Ind. - The bird doing loop-the-loops in the cage and pulling out its feathers is not just playing and preening. Stress may cause these activities and also may provide insight into ...

Two football-shaped bunches of feathers nap peacefully on a branch inside a low, gray building at the Bronx Zoo in New York City. These St. Vincent Amazon parrots, miles from their natural habitat and ...

A 37-year-old female yellow-headed Amazon parrot (Amazona ochrocephala oratrix) was presented after a 4-month-period behavior change and intermittent episodes of obtimded mentation. Clinical findings ...

Forbes contributors publish independent expert analyses and insights. GrrlScientist writes about evolution, ecology, behavior and health. “[M]y dream as a researcher is to discover the processes that ...