Question | Answer |
Feathers and bills are both made of what substance | keratin |
A hummingbird remaining stationary in the air is engaging in | hovering |
Identify the nutrient-rich fluid that feeds an unhatched chick | yolk |
What is the region of an egg where the embryo develops | germinal spot |
Using thermals to gain altitude without expending energy is called | soaring |
What is the outermost shell of an egg made of | calcium carbonate |
Whippoorwills, which catch insects in flight, have which type of bill | gaping |
To allow chicks to develop properly, eggs must be kept warm through | incubation |
Which type of flight allows birds to coast downhill | gliding |
Songbirds, with their three forward toes and one hind toe, have what type of feet | perching |
Colors, patterns and marking that are characteristic of a specific bird species are known as | field marks |
Which type of chicks are featherless and helpless when they hatch | altricial |
Which group of birds does not provide any parental care for their young | megapodes |
What is the fastest flying bird | peregrine falcon |
birds that sit on their eggs lose feathers from their ?? to transfer hear to their eggs more effectively | brood patch |
List the six categories of birds used by birdwatchers | perching birds, birds of prey, water birds, game birds, flightless birds, tropical birds |
List the six characteristics common to all members of class Aves, both living and extinct | bipedal, warm-blooded, vertebrates, feathers, scaly legs, wings |
produces oil that birds spread over their feathers | preen gland |
strong feathers found on a bird's body, wings and tail | contour |
retractable group of feathers supported by a bird's thumb bone | alula |
a ridge on the sternum | keel |
produces sound without vocal cords | syrinx |
feathers extending from a bird's hand to the tip of its wing | primary flight |
used to raise the wings | pectoralis minor |
the wing bone to which the major flight muscles connect | humerus |
a food storage sac in a bird's esophagus | crop |
soft, fluffy feathers found close to a bird's body | down |
used to grind food and make it more easily absorbed | gizzard |
Many birds have ? vision, which allows each of their eyes to see a different portion of the world around them. | monocular |
Migration routes followed year after year are known as | flyways |
Birds are born with a built-in knowledge called | instinct |
Birds perform this type of migration when they migrate relatively short distances by moving up and down a mountain | altitudinal |
in an activity called ? smaller birds will harass a larger birds | mobbing |
Many birds practice ? A a type of bathing that does not use water | dusting |
Birds use ants to clean their plumage in an activity called | anting |