Bird Biology Flashcard

Front

An opening in the surface of an organ is called _______.

Back

fenestration

Front

What does the arboreal hypothesis suggest about the evolution of flight in birds?

Back

Birds jumped from branch to branch using feathers for gliding.

Front

Having cavities filled with air is described as _______.

Back

pneumatic

Front

Specialized insulating feathers which trap air in spaces between each feather to decrease the rate of heat loss:

Back

down feathers

Front

The forked bone formed by the fusion of the clavicles in birds is known as the _______.

Back

furcula

Front

What is the primary function of contour feathers in birds?

Back

To provide aerodynamic shape and protection.

Front

Define the term 'pneumatization' in the context of bird anatomy.

Back

The process of forming air-filled cavities in bones.

Front

What role do primary feathers play in bird flight?

Back

They are the main flight feathers that provide lift and thrust.

Front

Explain the significance of the furcula in birds.

Back

It acts as a spring to help with the flapping motion during flight.

Front

What are the characteristics of down feathers?

Back

They are soft, fluffy, and provide insulation by trapping air.