Locomotion in a bird

By: Khadeeja, Fatimah Amira, Sajidah, Asma Athirah, Fatin Aisyah, Syahirah….

Special characteristics of Bird

• Its wing is aerofoil in shape

• It has pectoralis minor muscles and pectoralis major muscles

• These muscles are antagonistic muscles

• These muscles extend from sternum to humerus

How Birds Fly?

• When the pectoralis minor muscles contract, the wings are pulled up (upstroke)

• When the pectoralis major muscles contract, the wings are pulled down (downstroke)

• The wings which move up and down rhythmically generate the forward thrust as well as provide the lift for the flying bird

Structure of a Bird

Diagram of a Flying Bird

THE ENDThank you for your

attention.