I have a Heritage bred f(non-exhibition type) Cornish roo. He was fine one day, and the next day I find him laying down with his head tucked under his chest comb on the floor. He was and is in a pen alone. I checked him all over. No visible external pests. He was treated with Frontline two weeks ago. He was eating and drinking as usual up until the day I found him. His breathing is normal. He has normal reflex reactions in his limbs, and is still very strong. He is not blind. His ears are clean. I can't find any sign of injury on his neck. When I give him fresh shavings he picks his head up and walks around for a minute or so (clean shavings always make him happy) then tucks his beak to his chest and lays there. He can control his neck. When we examined him he had normal strength in his neck--he just wants to rest upsidedown!?? I did notice that when he shook to settle his feathers, he stumbled. I am thinking ear infection. I treated him for ear mites just in case, and he has been on Tylan for 48 hours with no improvement. We are going to tube feed him this afternoon because he has stopped eating and drinking. He is a young bird, just over a year old. Any thoughts? ****Update**** I e-mailed First State, and Peter Brown kindly replied. Eore is back to eating and drinking on his own after 9 days of being fed by gastric tube. He was preening his feathers last night! He most likely injured his neck while attempting to romance a hen the next pen over.