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| The feathers that give the bird its outward form. |
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| The area between the eye and the bill of a bird. |
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| The longer contour feathers that extend beyond the body and are used in flight. |
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| The process a bird uses to trim and clean its feathers with its bill. |
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| The smaller feathers that cover the base of the quills of the wings and tail feathers. |
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| Short, hair-like feathers. |
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| feathers that have tips that break down as they mature and then release a talclike powder. |
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| The small feathers that cover the base area on a bird's wing. |
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| The fleshy portion of the beak that surrounds the nostrils. |
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| Gravel-like material fed to birds that accumulates in the gizzerd and aids in grinding the food material. |
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| Small projections of the dorsal wall of a male's cloaca that aids in transferring sperm to the female cloaca. |
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| birds, especially cockatiels, that are primarily yellow.[image] |
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| The feathers on the back of a bird. |
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| A place where a large number of birds are kept. |
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| The breastbone of an animal. |
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| Small, soft feathers located under the contour feathers that conserve body heat. |
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| The lower and upper segments of a bird's bill. |
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| feathers that are black, with the outer margins or edged being of a different color. |
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| A nest of eggs or group of young birds. |
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| The area in a bird's oviduct where the two shell membranes are added to surround the yolk and albumen. |
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