My fives hens are scared of everything, yet I swear whenever a grey squirrel is anywhere near their run they run/fly over to where it is at as if they wanted to get it, like they do with flying insects. Am I imagining this? Has anyone ever seen a chicken or a group of chickens take out a squirrel? My run is only about 12 feet long, but if a squirrel is running along the outside they all chase after it in a group, and when the squirrel sees them, it immediately runs further away.