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What substance makes up a bird's bill?
Keratin
The outermost shell of an egg is made of ?
Calcium carbonate
Bill with hinged jaws that is able to open widely
gaping
Bird with huge nest decorated with shinee things
BowerBird
Type of flight that allows birds to coast downhill
Gliding
Foot with three foward toes and one hind toe
PERCHING
Birds that never provide parental care for the babies
Megapodes
Fastest bird
Peregrine Falcon
nutrient-rich fluid that feeds an unhatched chick
YOLK
Arrangement of the climbing foot
2 forward 2 backward
Act of keeping eggs warm and protected
Incubation
Largest living bird
Ostrich
Hummingbird's type of flight
Hovering
GRoup of feathers that are retractable, supported by a bird's "thumb"
Alula
how many shell membranes does a bird egg have?
2
Routes of migration year after year
Flyways
