Turkey Vultures

Last night I spent 15 minutes watching the vultures come into roost. The largest count was 85 turkey vultures spiraling around in a large, wide kettle on the north-facing mountain on Beaver Dam Road. Some close views occurred as the slid across the sky over the house, but in spite of my careful looking, I couldn't turn any of them into black vultures. I am told black vultures have roosted here, too, but I haven't seen them yet. It could be I'm just missing them. It could be with the cold temperatures (in the 40s around 6:00PM yesterday and 26 this morning at 6:30AM) they simply aren't roosting this far north yet. I will continue to watch for the black heads and different underwing pattern of the black vulture. I hope they are here.