We came home when it was dark and went to put the chickens away to find our only lavender silkie decapitated and her whole neck and her breast skinned. We have weasels, fox possum raccoons and owls. The fence is 4 feet high with 1 by 2 inch squares nd the wire is VERY thick and cant be bent. What could it have been? It was verry cold today... in the 20s and snowing all day.