baby chick hatchling

I just recently joined this site as its helped me so much this week. So here it is, my Cockatiels had a clutch of eggs, we were actually told the male was a female... until he was seen on top of her... anyway the hen is pretty young and started rejecting her eggs, I ended up candling them as...

Hi guys. Two babies hatched yesterday! They're delightfully ugly little worms! My cockatiels are first-time parents (and I'm a first-time breeder) and I have a couple of questions. 1. How long can the parents be off the nest before I should worry about the hatchlings being too cold? 2. How...