@shortridge I had this with Eurasian Magpies, which are smart enough to, for example, wind string around a perch to pull up a feeder, or to rock a feeder, grab a perch, and hook the perch on something to stop it moving (I had to put my feeders in a big cage). And then empty it in minutes. They used to come into the kitchen to check out what I was making when my back was turned.