A shared shape rule, the power cascade, governs most bird beak growth. It links modern birds with extinct dinosaurs.

A pet bird needs perches to rest, play, and even clean their beak. But when you start shopping ... Also, many birds like to chew on their wooden perch, so keep an eye on it and replace it when ...

Kathleen Garland receives funding from the Australian Government, Monash University and Museums Victoria. Alistair Evans receives funding from the Australian Research Council and Monash University ...