I been doing a little reading in here about snizzing (cold like) and i just found one of my 1 week old chick snizzing quite frequently i thought he was snizzing because he was drinking water and probably got some in the vents or something but she kept doing it for the rest of the day, today i found another chick who is inthe same brooder doing the same, when i went to the ranch where i have 10 dominique chicks 1 month olds i notice ome of them is doing the freaking same thing "snizzing" whats going one? It could be a viral diseases? A respiratorie infecction? Or they usually do this when the climate changed? Was very hot since i live in cali but a few day ago starts getting very chilly in the afternoons, im thinking in buy the tylan50, should i do it or what? Thanks for any adviced or help