Is this Frostbite? How to Treat?

[markinohio]

One of our White Leghorns has black spots on the side of her face. The temp last night was -15 degrees F. How should we treat her?
We have heat lamp in the coop and there is some ventilation. Any help would be appreciated. Thanks

 

[ChickenCanoe]

Not sure, as frostbite is usually first observed on the combs and next wattles.

Sometimes a heat lamp (higher temperature) will increase humidity which increases frostbite.

Could she have been scratched or bitten?

We've been close to those temps and only the roosters have gotten frostbitten and it's the combs and wattles.

There's really nothing to do when it turns black but watch for infection, let it fall off. It's dead tissue and there's no regenerating it.