ANSC 1011 Chapter : Avian Biology 2012 Compatibility Mode
Document Summary
Unique features of fowl: high body temperature (105-107 degrees f, high pulse rate (300 beats/min, high respiration rate (14-22 breaths/min, high rate of food passage (2. 5 hours, fusion of certain bones, adaptation of forelimbs to wings. Body covering (skin and feathers: feathers (all birds) provide protection regulate body temperature aid in flight secondary sex characteristics. Feather types: quill wings and tail, contour wings and body, plumules next to the body (down) provide insulation. Feather tracts: filoplume next to the body (hairlike) Feathers do not cover the body uniformly but grow in rows on specific parts of the body shoulder thigh rump breast neck abdomen leg back wing head. Epidermis (outer layer) develops into comb, wattles, and earlobes develops into feathers, beak, toe nails, and scales. Skin color results from different combinations of pigments in the upper and lower layers of the skin yellow, white, blue, green, black.
