The bird have found the feeders. So far it looks like it’s all finches, but in the past I’ve also seen cardinals and blue jays. In the original squirrel photo, the tube shaped feeder on the left is filled with generic bird seed which appears to be mainly small seeds. The larger, hour-glass shaped feeder on right is filled with sun-flower seeds and that seems to be the one that the birds are most interested in. (The size of the openings in the mesh make it impractical to fill it with most other kinds of seed.)

As of this morning, the squirrels haven’t found the feeder yet, but one came exploring while I was watching. My guess is that it was drawn to my yard by the sound of the birds.

For all I know, the squirrels actually discovered the feeders while I was at work. But it was dark by the time I got home, so it’s hard to say. My guess is that I’ll see squirrels on the feeder tomorrow.