Birds, Bills, and Beaks
What substance makes up a birds bill
keratin
includes Macaws and Parakeets
Tropical birds
A bird that is born helpless, usually without feathers of their eyes closed
Altricial
Stong feathers found on a birds body
Contour feathers
Most important flight muscle
A bill used foe digging in the sand for crustaceans
Probing bill
Edible birds like quail and chickens
Game birds
precocial
Soft fluffy feathers of a bird
down
Migration from one height of a mountain to another
Altitudinal migration
What is the sound producing organ in a bird
Syrinx
Includes pelicans and grebes
Water birds
What nutrient rich fluid feeds and unhatched chick
Yolk
What organ produces oil that helps the bird become waterproof
Preen gland
What part of a birds stomach stores food?
Grinds it down?
Crop
Gizzard
Largest flying bird?
Smallest?
Andean Condor
Bee Hummingbird
Includes eagles and hawks
Birds of prey
What substance are the egg shell membranes made out of
keratin
What do birds do to replace their old broken feathers with new ones
Molt
What type of flight is when a bird gains altitude and glides to a new location where it gains altitude again and glides and so forth
Soaring
What structure on a birds sternum provides a place for muscles to attach
Keel- Wishbone
Does not have a keel. Includes ostriches and emus
flightless birds
What is the outermost shell made out of
calcium bicarbonate
What is the retractable group of feathers
Give four characteristics of a birds respiratory system
1. Birds don't use a diaphragm, instead they use their muscles to open and close their thoracic cavity
2. A birds lungs have air capillaries that allow air to flow through the lungs
3. Birds inhale and exhale twice instead of how humans do- this allows the bird to extract the most amount of air possible from the breath
4. Birds have air sacs that extend into the bones to allow air to flow through and cool down the bird.