I just bought a pair of Bantam Buff Brahma today. The cockerel will look perfectly normal and then throw his head back so his beak is pointing straight up. He almost seems to get stuck in that position (like off balance) and then eventually goes back to normal. He ate and drank normally when I got him home. He seems to do this most when startled or hears noise above him. He and his girlfriend are separate from the other chickens but not by much - They are about 4 feet off the ground and the other chickens are free ranging but I have not seen any go up where the new birds are. I bought this pair from a very reputable breeder, a really nice man, who said the cockerel looked fine yesterday when they were separating some from the flock and just noticed the head thing today. Any suggestions?