DH had just finished cutting the grass and it was nearing sundown so I let all the younger chickens and ducks out of the run to free range for a bit. I was pressure washing the brickwalk right near them and DH was finishing up some yard work. Rex was right by me waiting to play ball. The pressure washer sounds hurt his ears so he kept them plastered to his head but he was there all day right beside me. Next thing I know I see DH motioning for me to come. He's yelling "something just got the ducks". He said "I was just here and all the ducks were in the yard and I stepped away to get them a cup of food and now they're all dead. Something got them that fast." Well it didn't take but a second to see Lucy, our stray/mutt, dog just lying there amongst the carnage like she was proud of herself. She had killed 6 ducks in a matter of 2 minutes with both DH and I and Rex all right there and neither of us saw or heard a thing. She had chased them all over and they were spread out over a large portion of ground, some right in front of hen house trying to get back in. Looks like she got all the Mallards and one Rouen. 5 survived and were hiding in hen house. She also killed my one little rumpless, tufted Araucana which was under one of the dead ducks, possibly just got in her way. We were so upset. I know we free range and were expecting losses but not to our own dog who has lived with free ranging chickens for over a year. I blame myself because I don't think I really introduced her to the ducks. Just added them to the barnyard mix. Got Mallards the end of March and hatched Rouens beg. of April and they mostly stayed in the run but they had gotten so big that I let them out today. I guess Lucy just didn't know what they were but now I can't trust her and worry about letting anything free range, especially the surviving ducks. The plan was to let them get big and have them live on our pond. Guess I'm not going to be able to do that now. It is so upsetting because she kills for the sport of it - rabbits, squirrels, moles, and now the cute chipmunks that live in front hedges. She kills quickly and silently and with one bite and then drops it and leaves it. I've been trying to get her to stop killing the chipmunks but she's obsessed with it. Sits and stares at ground and then digs up and kills a chipmunk or a mole. Moles, great but I really like the cute chipmunks. Well I know it's along post but felt I had to post the bad with the good. I know a lot of you follow my free ranging threads and I'm sure there will be a lot who will think "I told you so" with me being the first one. I was telling my daughter the other day that Lucy was a killer and I didn't trust her. I think Rex just always keeps her in check around the chicks and ducks and she saw her opportunity and went for it.