Term
| What is the only animal God created with feathers? |
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Definition
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| Feathers provide what for an otherwise vulnerable bird? |
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Definition
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| Down feathers are called what? |
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Definition
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Term
| Pennae are divided into what two feather categories? |
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Definition
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Term
| How do down feathers preserve a bird's body heat? |
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Definition
| Insulating air trapped next to a bird's body by the down feathers. |
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Term
| Flight feathers consist of what? |
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Definition
| Pennae on the wings and tail. |
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Term
| What is above the feather's hollow quill? |
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Definition
| the rachis (which is the rib, or shaft) |
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Term
| The complex structure of the vane is formed by what? |
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Definition
| Hundreds of pairs of barbs, which project from either side of the rachis. |
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Term
| What permits flight feathers to remain firm when the bird flies? |
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Definition
| Barbules and special attaching hooks. |
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Term
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Definition
| The process of oiling and cleaning feathers. |
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Term
| What provides an upward force allowing birds to fly? |
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Definition
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Term
| What wings make flight slow but make changing directions easy? |
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Definition
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Term
| What wing type do birds of prey have? |
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Definition
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Term
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Definition
| The sharp claws on birds of prey. |
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Definition
| Stiff, pointed growths on the legs of birds. |
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Term
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Definition
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Term
| What organ adds gastric fluids to break down foods? |
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Definition
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Term
| What are the purposes of a birds feathers? |
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Definition
| insulating layer around birds body, help to fly, camouflage, attracting mate, waterproof covering |
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Term
| What type of bird has three front toes and one back toe on their feet? |
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Definition
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Term
| What keeps perching birds toes in place? |
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Definition
| A special mechanism of tendons, muscles, and nerves that locks their toes into place. |
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Term
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Definition
| Grinds food with little bits of stone, glass and sand. |
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Term
| Ground food enters the intestines, where the body begins to absorb food nutrients into the ________________. |
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Definition
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Term
| The sequence through which food passes during the digestive process is: |
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Definition
| crop, stomach, gizzard, intestine, cloaca |
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Term
| Undigested food and wastes are passed on to the __________________ just before being excreted. |
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Definition
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Term
| Before birds build a nest, what happens? |
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Definition
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Term
| Before a young chick can grow what must happen? |
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Definition
| An egg must be fertilized by a rooster's sperm. |
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Term
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Definition
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Term
| What provides food for the developing chicks? |
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Definition
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Term
| What coats the egg yolk and albumen with a hard shell rich in calcium? |
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Definition
| special lime-producing glands |
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Term
| Why do birds need air sacs? |
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Definition
| Their lungs are not large enough to supply all their oxygen needs. |
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Term
| Does the male or female of most species have the most drab feathers? |
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Definition
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Term
Air sacs make the bird _______________,
which assists in flight. |
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Definition
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Term
| Of all the vertebrates, birds have the most efficient what? |
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Definition
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Term
| After a clutch of 10 to 15 fertilized eggs is laid, the hen begins to do what? |
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Definition
| incubate the eggs to hatch them |
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Term
| The bird heart has how many chambers? |
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Definition
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Term
| A bird's vertebrae from below the neck to the tail are joined to what to form a strong frame unique to birds? |
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Definition
| to the ribs, and breastbone (sturnum) |
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Term
| The bird's flight muscles are attached to what? |
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Definition
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Term
| Birds are able to make many complicated and coordinated moves because of what? |
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Definition
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Term
| Instinctive behavior in the bird is controlled by what? |
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Definition
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Term
| Eyesight and hearing of the bird are controlled by what? |
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Definition
| cerebral lobes of the bird brain |
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Term
| Why do birds migrate to warmer climates? |
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Definition
| warm weather to raise young, and plentiful supply of food |
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Term
| What triggers the migratory instinct? |
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Definition
| Physiological and behavioral changes caused by the secretion of a hormone by the pituitary gland. |
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Term
| Carolus Linnaeus devised what that is used to group animals of similar characteristics? |
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Definition
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Term
| Birds are members of the animal kingdom and are classified into what phylum, subphylum and class? |
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Definition
phylum: Chordata;
subphylum: Vertebrata;
class: Aves |
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Term
| The class of birds is divided into how many orders and how many species? |
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Definition
| 27 orders, with nearly 8,600 species |
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Term
| God commanded Israel not to eat what, and why shouldn't they? |
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Definition
| Birds of prey, because they may carry diseases from eating living and dead animals. |
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Term
| Wading, swimming, and diving birds all belong to the which category? |
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Definition
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Term
| What is the largest group of birds? |
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Definition
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Term
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Definition
| A pouch under a bird's neck where food can be stored. |
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Term
| What are the most aerodynamically efficient wings? |
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Definition
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Term
| Toes spread apart for good traction belong to which birds? |
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Definition
| Birds that spend their life walking about land. |
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Term
| What type of bird feet are designed for swimming? |
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Definition
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Term
| Birds of prey have beaks designed for what? |
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Definition
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Term
| What allows a songbird to sing? |
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Definition
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Term
| Which birds are not disease-prone, vegetarian, eat grain and seeds? |
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Definition
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Term
| Birds that cannot fly are called what? |
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Definition
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