I live in a small dairy based farm town on 31 acres. Five acres cleared for our home and barn, the rest is wetlands connected to the neighbors' wooded acreages. So it is very hard to destroy the coyotes all together. I know I have a pack living in our woods beyond the pasture, because I have heard them sound off at every siren that goes down the main road a mile away. Sounds like there are dozens, with all the yapping and yowling they do. My DH is normally home during the day, but has been out of town, and I think that is why they came in like they did, with the place deserted except for the animals. I would never have expected it from coyotes, but I do not believe dogs could have done this. We have no stray dog problem here.
Another friend thinks it could be a family of fisher cats. I have heard a new strange creature at night, and when describing it, was told it was definitely a fisher.
Though I did come face to face with a coyote, as I walked out of my barn with one of my horses one morning earlier in the week. The day of the kill, some stalls were open, and our wrap around front porch is enclosed underneath, with a small opening under the steps. The chickens and the cats lounge under there often. I think some of the survivors made it under there and hid safely. My youngest, a group of 3 blue Orps, ran in the chicken coop and stayed safe, and one Black Jersey. Only ONE of my older laying hens was saved. A very savvy hen who is pretty much untouchable and quite flighty, making her NOT a good candidate for predation, thank goodness.
It looks like the others were all taken by surprise and had no chance. I only found one dead body, a 4 month old light Brahma, in the woods behind our detached garage. The rest of the kills were evident only by big groupings of feathers. And I could identify each and every bird as I found them. It was awful walking the property and finding one kill site after another. They were pretty much spread in every direction, over the 5 acres. Which leads me to believe there was a big packSeveral were hundreds of feet out in my horse pasture. My horses were fine, and very calm, when I got home, but there is no doubt they witnessed a lot of death and destruction. Sigh....