My brooder babies always eat at night. They're in a dark barn with a red lamp, and always up and moving when I go out to check on them at night. Cornish cross, production layers, mutts, whatever. The red light doesn't let it get dark enough for them to trigger a good sleep, they just sleep randomly.
Broody raised babies don't get up to eat at night, though.
Broody raised babies don't get up to eat at night, though.