Chapter 6
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?
