eric,
Can we borrow your blackbird? We have three neighbours with 'wandering' cats and even if they are not in our garden when we let the dog out, she knows they have been here because she barks her head off.
The birds around here are blackbirds, thrushes, woodpeckers, sparrows and a few ringneck doves but the cats do not seem to bother them, just our Gizzy.
dave