Welcome to all those new to BYC!
Love all the pics of the babies...mine are getting older so not so cute any more.
Hollymh, your birds should do fine. My Brahmas don't like being out in the snow so in winter they choose to stay in the coop and under the roofed in area even though they could free range if they wanted. Last year 30+ birds in about a 12x16 foot area and they got along great. I try to give them things to do to keep them busy....they have a dry place to dust bathe, a bale of hay to scratch around in, and flock block and pumpkins to peck at.