Speaking of collies and german shepherds, I have a mutt dog something of a mix (I think -- at least she looks like) between the two breeds. I free range my birds and my "mutt" is wonderful about keeping my birds safe; she seems to be naturally inclined to protecting the farm. I found her as a stray with a bunch of puppies- adopted out the puppies, spayed and kept her -- nothing that does not belong on my little farm ventures on the premises:
She does look like a big smart sweet dog. A BYCer and friend in Pendleton IN had that same cross. His boy was good enough to keep the Coyotes off his farm. They woould try to bait his dog to go out into the corn fields with a female Coyote in season, and his boy would not fall for that. Very smart intelligent mix. I see your girl looks very content doing her job. VERY NICE!