My dad has his rabbits upstairs in the barn. He has them(females and babies) running free together while his males are in a separate area with my baby chicks in a separate pen in the henhouse. First the babies started getting killed. We thought it was the barn cat again. We have fixed every hole we can think of and can't find one big enough for her to get through at any Low level. But as all the babies got bigger or were killed the ones getting killed are bigger. We put the smaller (6-8week) babies in with the bucks as soon as they were big enough and haven't lost one. Now the geese sleep in the henhouse and the goat yard borders the one side. I haven't lost a chicken and those babies and the bucks are fine. The cats can get in the henhouse but not the pen, but haven't gotten a baby even though this pen is enclosed with the same stuff as the upstairs pen. Which is chicken wire. Last night he had 3 does killed just their throats slit and left to die. Any ideas what we are dealing with? Is it the cat, a coon, possum, weasel, mink or rats? Help need to know what to look for.