Great advice on the dog training. I'd just like to add a few things. I have a Newfoundland who has protected my flock from predators including crow without any formal training for that particular job. I'm also working on training our newly adopted 7yr old West Highland Terrier (bred for vermin hunting, including fox and badger) to help deter any predators that may be too quick for the big guy. Exercise her WELL to help her relieve all that energy before beginning any training sessions and having her sit and wait for her meals until you say "okay" will help you with getting her to focus. "Leave it" is another really important command in regards to everything you don't want her to have. A leash will be your best friend when introducing your dog to your birds, a quick tug and a "leave it" any time she shows any interest in the birds themselves and redirect her attention. When she does, praise her.