1 year old hens getting darker combs?

[ashrich6]

hi! So my hens combs have some dark purple areas. They are eating, drinking and being their normal crazy selfs. One hen has mild diarrhea. I tried to take a picture of one of the hens. Does anyone know what it could be?

 

[ChickensAreSweet]

I have seen that before with worms. I would check for worms.

Darkened combs can also be other things- anything where blood flow is impaired. If you can take the poo in for cocci/worms/bacterial check with the vet that would be informative. False negatives are possible with the worms test.