So I live in a neighborhood that was built a few (8) years back near a protected green belt. I have 8 chickens that are typically locked up at night but some nights stay out and perch on the metal fence that surrounds their coup. A standard wooden fence surrounds the yard. Two chickens have disappeared, in very similar ways. With the first one, I came outside in the morning to find feathers scattered all over the yard, clearly the chicken was not easy to get a hold of. She was one of the largest ones we had. There was no blood or parts, just feathers. I followed the trail of feathers and occasionally found small piles of soft feathers where it looked like a little struggle had happened. The feather trail led about 100 feet away over several fences into the tree line where I could see a small piece of the carcass left. It was gone the next day. The second chicken was a much smaller chicken, was likewise taken from within the metal fenced area while the chickens were perched. They were again not locked up. There was no signs of a struggle within the pen, just one less chicken the next day. Upon searching within the yard I found maybe 1 or 2 feathers. Then as I was walking along the outside of the yard I saw a trail of feathers in a dead tree that sits against the fence and is about 5-6 feet tall. The feather trail clearly goes up the free, over the branches, down the tree, and then along the yard in a straight line. With occasional small piles of 3-4 feathers here and there, one small spot of blood, and then a thin trail of feathers off into the tree line. Whatever it is has taken both a very large chicken and somewhat small adult chicken, carried them over fences/into small trees and carried them several hundred feet into the green belt. I live in the PNW, and have seen possums and raccoons out around the area.