I went out this morning, and the chicks seem to be just fine. When I looked in the tank.... I mean brooder they looked up at me with a stink eye look like I was invading their territory.
I still have the heat lamp on out there. It's still been pretty cold. High temps have only been in the low 20's. If it starts warming up into the 30's I'll switch the heat lamp for a regular bulb, but I think it's probably still too cold for them to go without something for heat. Depending on the weather, I'll switch them to a wire cage in the barn after that.
We were up off and on all night with a nubian goat that is going to have her first batch of kids. I hope she doesn't wait until my hubby and I are both at work later today to have them. They often don't make it when they are born in this cold weather.
As far as determining the sex of these guys, I'm looking at combs and wattles. The little roo has a larger comb and larger, redder wattles. He is the biggest one of the bunch, but I'm sure that is not always a reliable variable. We debated for quite a while wether the third one was a pullet or a roo, but she's shaping up to be of the feminine gender.