I bet white rocks,maybe leghorn they are already getting their wing feathers and definitely a white bird at least a couple , the one that you can just see the wing and the one in the upper right corner...I bought white rocks( not to be confused with cornish rocks which are meaties) from there straight run a couple weeks ago sweet birds...
Little girl that had pasty butt. No signs of it this evening!! Hooray!
Pics are from a phone camera. Will have better ones soon She seems to be very sweet.