New Bird Feeders

I have installed several new birdfeeders in the back yard. The red feeder is squirrel-proof, as it shuts down when birds perch on the perching part.

BUT, don’t feel bad for the squirrels as they steal plenty of bird food from the front yard.

It took only a day for the birds to find this new feeding area. I wonder what the winter birds eat when humans do not feed them?