Comb turning purple??!!?!?

[ChickenyChickeny]

My hen's comb is purple at the end. its not swelling, just... purple. Also, it feels cold, and that bit of her comb is thinner than the rest of her comb. She does have coryza, could this be a side effect? Or is this because of some circulation problem? I'm lost here

 

[sourland]

With the Coryza she may have diminished oxygen levels which can result in darkening of the comb as can heart conditions. My guess is that it is a result of her respiratory problems.

 

[ChickenyChickeny]

With the Coryza she may have diminished oxygen levels which can result in darkening of the comb as can heart conditions. My guess is that it is a result of her respiratory problems.

oh. Well, thank you for the info. poor chick