Hello! We just got these 4 baby chicks from Tractor Supply today, and we are unsure of what breed they are... they were in an extremely crowded bin that said it contained Isa browns, Calico Princess' and Copper marans. The lady helping us told us that they just got the shipment of chicks today, and there were some sapphire gem chicks, but those had died. We were handed the two grey ones and the chick in the last picture as calico princess', but after looking up images online, we're thinking that the grey ones might be the sapphire gems, and that neither of them look like the calico princess chicks. The third chick in the picture was given to us as an Isa brown, but as you can see, it has a considerable amount of grey on it, and looks very similar to the fourth one, except more colorful, so we're skeptical. I don't know how well you can guess the breed before they feather out, but we'll take any of the advice we can get!! Thanks so much!