I'm sorry to say that the resident farm dogs are no longer with us. After much agonizing, we decided to make a good faith effort to try to let them stay, but they blew it immediately by attacking our dog. They were summarily dispatched. Our dog was terrified, but otherwise okay. He managed to run off into the trees to hide, which presented another problem because we couldn't find him for hours and didn't think we'd ever see him again. Needless to say, we were extremely relieved when he came tiptoeing out of the underbrush later in the evening.
Verde, I'm sorry - I know this is not the outcome you'd have preferred, and truly it was not the outcome we'd have preferred either, but they left us with little choice. I'm sorry it had to end this way, but their future just wasn't looking good no matter what happened.
The big upside to the day came in the early evening, while we were sitting out in the yard. We happened to look out over the pond, and saw one of these come in from the opposite side. It came in really slowly, landed briefly and then took off again. Really incredible.