Different breeds
there's not much difference in ages.
I can't see the picture that I posted on my phone but probably quail, partridge and Scots Grey chickens in it?
It works ok for me, I keep them in there maybe three weeks then move them to a bigger brooder with bigger birds.
Three week old chickens can be a bit rough on day old quail, I see the odd one get stepped on but they're ok as far as fighting or attacking goes, they don't seem to bother with each other.
The turkeys should be hatching in another wee or so I'll hopefully have around 30 of them to add to the mix!
I've had allsorts in together this year, the incubators not been off since the 2nd of February