Pigeon Lab Flashcards
Bird skin is __
very thin and fragile
The only gland present on bird skin
uropygial gland at the base of the tail; it produces oils for preening feathers
Cere
waxy protuberance on the beak
What is the cere for?
Unknown. Possibly:
- amplifies smell
- helps filter air
What is special about bird bones?
hollow, often fused, contain air spaces
The air sacs all connect to ____
the lungs
When the bird inhales…
all the air sacs expand (inhaled air fills the posterior air sacs, air from the lungs moves into the anterior air sacs)
When the bird exhales…
air moves from the posterior air sacs through the lungs and from the anterior air sacs out through the trachea
How many chambers in bird hearts?
four
crop
food is temporarily stored there before being digested
gizzard
where mastication of food occurs
baby pigeons
squabs
Only pigeons, male emperor penguins, and flamingos do this
cells lining the crop produce “milk”
How much fat is in pigeon milk?
35% (in cows, it is only 3-5%)
Two main areas of a pigeon stomach
proventriculus (anterior) and gizzard (posterior)
