Suddenly yesterday our 5 month old cockerel started making a sort of donkey sound. Then there was less and less sound out of him like he'd lost his voice. Now I notice he is raspy and a bit gurgle sounding when he breaths. I gave him some bread soaked in olive oil which he ate a bit of but hasn't touched his normal food yesterday. I was worried he had something stuck in his throat and he had a no crow collar on (obviously not tight enough as his crowing was getting complaints from the neighbours), so we took that off yesterday just in case but he hasn't improved. Tried feeling his crop but couldn't feel anything so I guess it's empty if he hasn't eaten. He is separate from the hens at the mo. I have not had a poorly chicken yet so I have nothing on hand. What would I need to get to help him and will he last if he takes days to arrive if I can't just pop out and buy this stuff? Help please!