Although there is feed in the squirrel feeder at times these silly little creatures like to swing about and pinch the birds peanuts. I suppose if the grass is always greener on the other side the peanuts might just be tastier in the bird feeder.
better to eat someone else's and save your own for later! [sightings of red squirrels now less than a mile way from us - but I don't think they'll ever get as near as our garden]