Abeka 7th Science Test 7 p2 missing wing and essay

A bird's most important flight muscles are the ________.

• pectorals

• biceps

• trapezius

• deltoid

The food-storage sac in a bird's esophagus is the __________.

• gizzard
• intestine
• stomach
• crop

The strong feathers found on a bird's body, wings, and tail are ______ feathers.

• body

• contour

• flight

• down

Birds are able to know what kind of nest to build because of a built-in knowledge called ________.

• instinct
• training
• habit
• experience

Some birds migrate by moving short distances up or down a mountain. This is ______ migration.

• seasonal
• altitudinal
• latitudinal
• nomadic

You are researching birds and find an article titles "True Colors: Decoding Bird Plummage." Plumage is referring to the birds' ________.

• wings
• tail
• feathers
• beak

A bird "bathing" himself in the dirt is called _______.

• dusting

• feather cleaning
• sanding

• water bathing

Most birds are able to detect danger from all sides because they are designed with _______ vision.

• monocular
• binocular
• stereoscopic
• monochromatic

The largest flying bird is the __________.

• Andean condor

• penguin
• ostrich
• bald eagle

The organ that allows bird to produce sound without vocal cords is the _______.

• larynx
• trachea
• esophagus
• syrinx