do chickens combs go blue if not drinking enough water

[carburant]

can any one tell me if chickens dont take enough water do their combs go blue but look healthy apart from that

 

[Eggcessive]

Welcome to BYC. Is the whole comb blue or just the tips or back of the comb?

 

[carburant]

just the tips

 

[carburant]

just the tips

 

[Eggcessive]

I have seen just the tips or back part of a large comb become dark when there was nothing wrong, only to become red shortly after. In cold weather my roster's comb will get a little darker on the tips during cold weather, perhaps from a circulation problem. Are you in a cold area where frostbite could be a problem? Pictures can sometimes help. Does the chicken seem to be alert and active enough? Dehydration can cause weakness and lethargy, and even lameness in later stages. It could also cause some darkening