Kids Riddles

Question: A rooster lays an egg at 6:00 AM. When does the farmer find it?

Question: I attach to your hip and I sing all day.
All I want to do is play.

Question: What English word is always spelled incorrectly?

Question: It takes ten men ten hours to build a certain wall. How long does it take five men to build the same wall?

Question: I have four wings, but cannot fly.
I never laugh and never cry;
On the same spot I'm always found, toiling away with a little sound.

What am I?