Ladycluck - Leghorns have really large combs. I'd expect it to be larger in the first picture if it were a cockerel. I think it's a pullet. Black sex link is absolutely a cockerel.
PAchickenlover - the sex is determined by the hen when the egg is laid. So no, temps do not play a role in what sex. They can however kill off the pullets and thus you hatch more of the males.
Snort!
Congrats!
Great news on shipped eggs! If I had a basement, I would so have chicks in it!
It depends on how high up the pecking order your broody is. If she's pretty high up, then she'll stay put and the others will lay around her. If she's low on the pecking order, they could peck her until she vacates the spot. She'll return when they are done laying.
Little chocolate cutie pie!
I have you beat. Here is a 1 DAY old chick crowing:
Welcome!