Abeka 7th grade Science Test 7

keratin

What substance makes up a bird's bill?

perching foot

Which type of foot has three forward toes and one hind toe?

gaping bill

Which type of bill has hinged jaws that allow the bill to be opened widely?

two forward toes and two backward toes

How are the toes of a climbing foot arranged?

gizzard

What special section of a bird's stomach grinds food to make it more easily absorbed?

keel

What structure on a bird's sternum provides an attachment for the flight muscles?

crop

What is the food storage sac in a bird's esophagus called?

monocular

What type of vision allows a bird to detect danger from all sides?

syrinx

What organ allows birds to produce sound without vocal chords?

four

Birds have how many heart chambers?

grasping foot

What type of feet do hunting birds need to capture their prey?

swimming feet

What type of foot does a bird have if three webbed toes point forward and one toe points straight back?

peregrine falcon

What is the fastest bird?

gliding

Which type of flight allows birds to coast "downhill"?

hover

Hummingbirds are able to remain stationary in the air. What type of flight is this?

flyways

What term refers to the migration routes that birds follow year after year?

pectorals

What are a bird's most important flight muscles called?

altitudinal migration

What type of migration involves birds moving short distances up or down a mountain?

soaring

What term refers to the type of flight birds use by circling inside a thermal to gain altitude and then gliding to another thermal?

field marks

What term refers to the colors, patterns and markings of a specific bird species?

to transfer body heat to the egg

Why do birds lose feathers on their brood patch?

preen gland

What organ produces oil that birds spread over their feathers?

alula

What retractable group of feathers is supported by a bird's "thumb" bone?

down feathers

What term refers to the soft, fluffy feathers found nearest a bird's body?

feathers

What does the term "plumage" refer to?

contour feathers

What term refers to the strong feathers found on a bird's body, wings, and tail?

molt

What term refers to birds replacing old, broken feathers with new ones?

yolk

What is the nutrient rich fluid that feeds and unhatched chick?

calcium carbonate

What is the outermost shell of an egg made of?

keratin

The shell membranes of bird eggs are made of what substance?

germinal spot

What is the region of an egg where the embryo develops?

incubation

What term refers to the act of keeping eggs warm for proper chick development?

two

How many shell membranes does a bird egg have?

chalazae

What term refers to the two dense, twisted cords that hold the yolk body in place?

precocial

What term refers to a bird that is born with down feathers and is able to run shortly after birth?

altricial

What types of chicks hatch without feathers and have their eyes closed for the first several days?

mobbing

What term refers to the behavior of a flock of smaller birds harassing a larger bird?

dusting

What term refers to a bird bathing itself in dirt?

instinct

What term refers to a bird's built-in knowledge?

nuthatch

What type of bird is known for climbing down a tree trunk head first?

megapodes

Which group of birds doesn't provide any parental care for their young after hatching?

bower bird

What bird is known for building a huge "nest" and decorating it with shiny objects as part of its mating ritual?

ostrich

What is the largest living bird?

tropical birds

Which bird group includes macaws and parakeets?

flightless

Which bird group includes ostriches and emus?

game

Which bird group includes chickens and quail?

birds of prey

Which bird group includes eagles and hawks?

water birds

Which bird group includes pelicans and grebes?

game

Which bird group includes edible birds that are or have been hunted?

flightless

Which bird group has members that don't have a keel?

Andean condor

What is the largest flying bird?

bee hummingbird

What is the smallest of all birds?

songbirds

which one is likely to be preferred food of a bird with binocular vision?

shaft, barbule, barb, vane

identify the part of a feather in order 40, 41, 42, 43