ive taken even old chicken, cat, dog, and human intruder killer dogs and re trained them just fine. its all in how you learn to handle them. i personally that aside dont like the constant need to brush an aussie, or that they want to bark at everything constantly for any reason, they can be mouthy, but not bad if conditioned. ive never tried working with one to herd, so dont know how hard their prey drive would be if tried to only to point encourage prey drive, but they make great watch dogs and know they do great around cats and small kids, and other small things even, but never seen around birds to much. i met some breeders local i can ask about pups if you want, but i see alot on craigs also pretty frequent.