Use a Rat trap to catch them. I have a couple nailed to trees and bait them with peanut butter and/or cheese. Squirrelses carry diseaseses that can be passed on to your chickens just like mices and ratses. If you can set it where the chickens can't get at it that would be best. Of course it could be a Chipmunk or Rat too. Both are disease carrying rodents too.I thought a chicken was eating eggs. I'm pretty sure it's the squirrels now. I found an egg with tiny teeth marks and no yolk. How do I stop squirrels from eating eggs?