My six week old pullet, twitches contantly, my little Cochin does it also. Whats going on with them? Are they sick? They are being fed 20% Dumor chick starter. They have pine bedding. They are in an aquarium for a little while till they get bigger. They walk around and act fine, so they must not be cold. They have plenty of water. And they have been doing it since we have gotten them.