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Ptarmigans, like many flying birds, have hollow bones. These light bones make it easier for the bird to fly. During the summer, the ptarmigans bones become heavier and stronger so they can withstand the stress of the ptarmigan's search for food. in the winter the bones become lighter so the bird can conserve energy while flying.
to help your bones get strong?
The willow ptarmigans enemies are dinosaurs!!!
The group name for ptarmigans is COVEY
Feathered feet.The feathered feet help them walk in snow.
Ptarmigans are birds, they do not have babies, they lay eggs.
They are there for your internal organs to be protected, help you move, and carry blood through your body.
There are animals that can move their bodies without bones, for instance worms and insects have no bones.
The new feathers are warmer and help the animal blend in with the snow.
How doesn't it? It keeps us alive! We are basically made up of water, skin, and bones.
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Invertebrites