Hi, I'm new here. I ordered three girls...a Buff orp, a SL wyandotte, and an Austrolorp. These were part of a larger order at the feed mill through Murray McMurray. My friend has four chicks she ordered at the same time and mine are developing much faster than hers...she has a Favrolle, a Brahma, an Americana and a Silkie (which of course is smaller.) Are my breeds known for getting big really fast, or do you think there may be some other issues such as gender or growing conditions. Mine are box-brooder raised and hers are being raised by a broody silkie hen (too cute by the way!!!) My Buff orp in particular is a porker...a nice one, though. I'm thinking they look more like 5-6 week olds instead of the 3 1/2 week-olds they are. And we cannot have any roosters.