I have a 4 month old brown leg horn hen. Earlier this afternoon I noticed she is holding her left leg up & limping bad... Well now she is letting out a squawk & holds her mouth open really wide for 10-15 seconds right after.. She'll wait a minute & do that same thing again. I thought it was just a hurt leg before (I've had 1 hen last year hurt her leg & she was fine within a month.. But she didn't do the weird squawk that this one is doing. Is she doing this out of pain from her leg or is there something else wrong with her?