I have a bird cage that is a good size and thought that it would be perfect for baby chicks... It has the grate at the bottom so that their poop would fall through and land in the tray, making it so that they aren't stepping in their poop. Is this a good idea or is it a bad idea to use the cage for raising the chicks? do they need the soft bedding under their feet instead of the grate? will the cage make it so that they aren't as warm as say a box? I can use a box if need be, I just didn't know which was preferable... I noticed that using a small animal cage was recommended on the chick raising page... but I wasn't sure if that was the type of cage with a grate at the bottom or not. Thank you!!! My chicks arrive in 2 days!!!! ETA: I am getting 4 chicks.