I slipped a couple Ameraucana/Blue Cochin eggs under my broody hen 21 days ago, and I'm pretty sure they hatched last night. She was acting different when I checked on her around 10pm, and this afternoon when I checked on her I saw two chicks. I've always bought feed-store chicks before and have never hatched any eggs. Is there anything I need to do? Is it ok to pick them up? I'd like to sex them and monitor for pasty butt, but the hen is being VERY protective of them. Is it enough just to put food and water nearby and let the hen do all the work? I splashed a little cider vinegar in the water. It's been very hot lately, 90's during the day and high 70's at night. Humidity has been fluctuating between 15% and 100% with random showers that last about 5 minutes.