oh yes! http://www.arkive.org/sharp-shinned-hawk/accipiter-striatus/ - that's what it was, phew!! I feel better now, thank you all
Sorry but they are VERY BOLD about going after chicks and anything less than fully grown bantam. They will swoop down on a chick just 10 feet away from me. Absolutely cannot have chicks free range between Sept-April/May because of this species and what I think are Coopers- looks similar but bigger.