Answer:
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
Take one out and scratch my head, I am now black but once was red.
Who is he that runs without a leg. And his house on his back?
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?