Air sacs are thin-walled structures ... Included among the advantages of this method are that it leaves the bird's head free for stereotaxic targeting and does not interfere with the beak clamps ...

Speaking to Interesting Engineering (IE), Schachner said, “air sacs and pulmonary diverticula ... Both muscles are located on the front of the bird’s chest. The discovery could lead to bio ...

Fossils of alvarezsaurid dinosaurs show bird-like air sacs in their bones. Scans revealed hollow spaces connected to their ...

The avian world is a treasure trove of fascinating and often bizarre mating rituals. Explore the different types of bird ...

The bird sits inside this bowl, slowly inflating its two enormous air sacs, sucking the air in with a whistling sound, until it is almost double its normal size, as big as a football. He then ...

These air sacs sometimes collapse simultaneously when the horned screamer takes off, creating a loud crackling noise. As its name suggests, this bird is also known for the loud calls it creates.

The volume of the pop and size of the air sacs give females a good idea of a ... and overgrazing by livestock are also threats to the bird’s existence. Though the International Union for ...