Well if they under a broody then they might all be hatched know and at least most of them are. I find that with broody's the chicks all hatch right at the time relative time. With incubators they tend to spread out over a couple days.
I had my very first hatch yeserday another is now started. First chick is topsy turvy on its feet, is panting and sleeps short, short periods. It's as if it is sooooo tired from hatching. Is this normal for new ones beyond 12 hours?