My rooster is about 6 years old. He seems to lose his balance when walking - looks like he is drunk. He is eating and drinking and otherwise seems ok except he is holding his tail feathers lower to the ground and occasionally will even fall foward when eating. Any suggestions? He is with 3 hens who are about 7 months old and very healthy. He is eating layer mash, cracked corn, fresh veggies and has grit and crushed oyster shells available to him as well. Is he old for a rooster? What is their average life span? Anything I can do to help him? Thanks in advance for answering all these questions!