I have a 23 week old speckled Sussex roo who's comb tips were really black the other day so I thought he had gotten frost bite over the winter and it got worse (thought frost bite during our really cold spell when i first noticed a dark color on the comb tips). it has now been warm for a few weeks and kept seeing the black tips. This am I went out and his comb tips were red, later in the day they were black and now red again. Any ideas?
Comb when red (trying to get pic when its black) color
Comb when red (trying to get pic when its black) color