The Uropygial gland is found near the base of the tail of birds.
Oil glands in birds, located near the base of their tails, produce a substance called preen oil. Birds use this oil to condition and waterproof their feathers, keeping them clean, smooth, and insulating. This allows birds to maintain the necessary balance of warmth, buoyancy, and flight efficiency.
under the wings of geese
Probably better for gliding than flying. Depends on how the birds flap their wings, how big they are and how big their wings are.
Most birds' flight feathers are located on their wings.
Penguins are flightless, aquatic birds. Penguins have a bill, wings, and lay eggs but they do not have mammary glands that produce milk.
They don't exactly flap their wings like birds, but they propel themselves through the air sometimes by a propeller, but mostly with jet engines attached under the wings.
Yes. Takahe are birds, and all birds have wings. Even flightless birds have wings, though they are of little or no use.
No, birds have lungs in their chest cavity not their wings.
All birds, including the kiwi, have wings. The kiwi's wings are tiny, and completely invisible under the kiwi's feathers, but they are present.
Two, all birds have two wings.
they flap wings
The birds are flown high in the sky under their own power.