Aves Crossword

Class of vertebrates comprised of birds
Cavity connected to the lungs that extend into the body
Feather that rounds out a bird’s body and help make it streamlined
Food storage organ of the alimentary canal
Soft feather of newly hatched bird
The maintenance of the constant body temperature by internal regulation of heat loss and gain
Is a forked bone found in birds, it strengthens of the thoracic skeleton to withstand the rigors of flight
Organ that grinds food in the digestive system of birds
Behave pattern that keep eggs Warm so that they can mature to hatching
Monomers assemble into bundles to form intermediate
The periodic replacement of feathers by shedding old feathers while producing new one
A layer of feathers that cover a bird
Behavior found in birds that involve the use of bill to position feathers
Where the powerful flight muscles attach to the body
Excreted in grime instead of in feces