group of young feral pigs or boars in a muddy pen

group of young feral pigs or boars in a muddy pen. There are about five or six pigs, most of which are dark gray or black in color, while one is lighter, almost sandy brown. They are rooting around in the dirt, which is wet and clumpy. The pen is enclosed by a fence and some debris, including what looks like concrete blocks and a metal barrel, is scattered around. The sun is shining and the lighting is good.