we've got a flock of 19, which includes 2 roosters who we've had for almost 1 week. tonight when i went in the coop to count them one hen sneezed. the coop is dusty and such so i ignored it but in the next minute she sneezed 2 or 3 more times so i shone a flashlight in her face and saw her nose was snotty and she was sniffling a bit. i took her out and caged her to get her away from the rest, then went in to double check and make sure the rest were fine. i found one who looked like it was slightly runny, but there was also hay on it. i took her out and when i pulled the hay off it came with sticky snot, so i put her with the other one. when i first saw the first one, i thought i saw thick and greenish yellow mucus, but looking a second time i think i was mistaken, because it is clear. what do i do?? they don't seem to have any other symptoms, but i only just noticed the issue. the new roosters seem completely fine, but could they have brought this in?? i'll try to attach some pictures.