Shelter: During storms, birds try
to get as sheltered as they can. Like this robin, they take shelter
in bushes, near buildings, or in trees. (No nests! Nests are not
shelters, but only cradles for baby robins.)
Feathers: What do you notice about the robin's feathers?
The bird fluffed his feathers to protect himself from the cold.
This fluffiness is important. It insulates the bird’s internal
organs so they stay at 104° F. Feathers themselves are such
good insulators that the outside of the feather is cold, like
the air. But, just a few millimeters under the feathers, the bird's
body is a cozy 104°F. Snow doesn’t melt on cold feathers,
so the feathers stay dry.
about cold feet? A bird’s feet don’t have much blood
flow. Still, birds fluff their belly feathers to help cover the
toes and keep them warm.
What is the temperature difference between the air and the bird’s
heart and lungs if it's 6° F outside? Answer: Almost 100 degrees!
(104°F - 6°F = 98°F.) Now you see the importance of
those fluffed-up feathers!
a few millimeters under the feathers, the bird's body
is a cozy 104°F."