We started raising chicks when my boyfriend purchased a dozen chicks in April of this year from Tractor Supply. He wasn't sure what they all were, and neither am I. All our eggs are brown, but I haven't figured out who is laying them yet. We get 7 a day from these 10 that we still have from the original order (a couple were Plymouth Rock, purchased for the meat; they are already processed). Can you tell me what we have here?