The squirrels have no problem with this feeder. They just perch off to one side of the feeder which keeps the door from closing. It is kind of fun watching those bushy tailed rats scoop fist-full after fist-full of seeds out of the dispenser and onto the ground. The crows just hang out on the ground and wait for the squirrels to do all the work. Everyone seems to love this feeder other than the song birds I was hoping to cater to. I may try to re-engineer this thing, or I may just throw it away.