Chapter 6

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Crop

What is the sac in a birds esophagus that stores and moistens dood and releases it in a steady stream to the rest of the digestive system?

preen

What is to clean the plumage, apply preening oils, or rearrange feathers with the beak?

molt

What is to completely replace feather by the shedding of old feathers as new ones grow?

contour feathers

What kind of feather is on a birds body, wings, and tail that is strong and helps provide a streamlined shape?

Gizzard

What organ makes up for the birds lack of teeth?

keratin

What substance is a bird's bill composed of?

omnivores

What type of birds are versatile and eat both meat and plants?

carnivores

What type of birds eat meat?

herbivores

What type of birds only eat plants and plant parts?

wandering albatross

Which bird has the greatest wingspread of all living birds?

ostrich

Which bird is the fastest running bird?

peregrine

Which bird is the world's fastest bird?

binocular vision

Which type of vision provides a narrow field of vision?

monocular vision

Which type of vistion provides a wide-andle view?

dusting

What is the practice of taking dust baths to help remove parasites?

pectorals

What are the birds most important flight muscles?

secondary feathers

What are the flight feathers that extend from the back of the birds "forearm"?

primary feathers

What are the flight feathers that extend from the birds "hand" to the tips of its wings?

tertiary feathers

What are the innermost flight feathers attached the humerus of a birds wing?

Sternum

What bone provides a mounting point for the bird's powerful flight muscles?

mobbing

What is a behavior in which several small birds "gang up" on a larger bird?

rodent running

What is a birds practice of protecting its young from predators by running away from the nest and drawing attention to itself?

intermittent flight

What is a combination of flapping and gliding?

anting

What is a habit that some birds have of rubbing ants on their plummage to relieve skin irritation or to rid the bird of parasites?

down feathers

What is a kinds of soft, fluffy feather close to the body that provides insulation?

altitudinal migration

What is a migration that takes place over very short distances from a higher altitude to a lower one?

flyways

What is a path that many migraiting birds follow your year after year?

field marks

What is a pattern or marking characteristic of a particular species of a bird?

alula

What is a retractable group of feathers on the front of a birds wing that increases lift at a low speed? The birds thumb supports this.

ornitholoigist

What is a scientist who studies birds called?

instincts

What is built in knowledge that animals possess at birth and do not have to learn?

visual displays

What is communication by displaying certain feathers, assuming certain poses, or performing special rituals?

barb

What is one of many of the side branches of the shaft of the feater?

barbules

What is one of the tiny hooks along the edge of a contour feather that "zips" the barbs together?

syrinx

What is the "voicebox" of a bird?

shaft

What is the hard "hollow" backbone of a feather?

soaring

What is the kind of flight in which a bird glides within a rising air mass so that it gains altitude without having to flap?

hover

What is the kind of flight in which a bird remains the stationary in the air?


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