Yikes! It's about 20 degrees Fahrenheit here and I just noticed one of my 11 week old chicks (Australorp) is wheezing pretty badly, She's also acting pretty lame refusing to move much, She does est/drink and she's standing, But her eyes are closed and it looks like she's gasping for air? I don't hear any gurgling in her wheezing but again, her wheeze is pretty bad, She's in a 16' x 8' coop with 60 other pullets, Same age, she has clean straw as bedding, and I've been feeding her (Along with everyone else) Grower/finisher feed and she's the only one wheezing. Should I be worried about this? Should I separate her? Any replies are gratefully appreciated!