Here in Nor Cal. Lost a baby Silkie (12 weeks old) to some sort of bird of prey. Four of them in a tree together. Husband heard all the commotion, ran out and there she (silkie) was rolling and flapping her wings. Some how she got away but was suffering. I saw the blood coming from a puncture wound under her little wing. I had to put her down. Not sure what kind of bird of prey they are but they are huge. They are not Red Tail. I thought may Peregrine Falcon but again they are huge. This particular flock free ranges and have been been for months. All of a sudden these BOP move in. What can I do to deter them til I get an enclosure built?