Air sac cannulas are indicated in birds with upper respiratory obstruction or for ventilation during surgical procedures involving the head and neck. Proper technique, knowledge of potential ...

It also connects to the bird’s air sac system, which, in turn, connects to its lungs. The powerful flight muscles of the shoulder attach to the keel, a special ridge of bone that runs down the ...

Air sacs, found in both extinct dinosaurs and modern birds, helped these creatures capture more oxygen and regulate body temperature. Their presence in sauropods played a critical role in enabling ...

Aside from their strange horns, these birds also possess some interesting anatomy below the surface. Inside their bones and skin are tons of tiny air sacs that reduce the weight of these large ...

The rare dancing grouse of the Southwest, called the lesser prairie chicken, is known for the males' elaborate calls and showy displays of reddish-orange air sacs while they perform mating dances on ...

Punctuating their displays with swishing, hooting and popping sounds, males bob their heads, fan their tail feathers, raise their wings, and expand and contract distinctive yellow air sacs to compete ...