I have never heard a chicken make this sound!!!! I just read some old threads that have also had Ameraucana's that did the same thing and feel better in 24 hours. Another site said treat w/antibiotics. Even someone's avian vet was clueless. she was fine this morning, had shade in the 77 degree dry weather, plenty of water and food. no grass treats today. she's sitting on my lap and that worries me very much! i saw her poop, not solid but not water, mostly normal. seems like 1 eye may be watering too.