I have some Silver Speckled Hamburgs that insist on roosting in a large spruce tree next to the coop. Two nights ago I lost 2 of 4. No body or mess, just some feathers in the area. Last night we caught the others and made them sleep inside. Then set out two live traps. This am the bait was gone and the traps had not gone off. We are in a rural area of western PA with a mix of mixed forests and hay fields/old strip mines. DH doesn't think an owl could grap them out of such a thick tree, so we're thinking feral cat, coon, possum, or fisher. Since traping was ineffective, we may put out poison that TSC recomended, but I would still like to know what it is to better direct our deterant and fortification efforts. Any ideas?