Bought black sunflower seeds for the hanger which fall through the mesh wire to the ground.  It looks cute hanging but if you hang it on a straight nail the sunflower hangs sideways so you don't get the right angle for viewing.  Then the seeds fall out when the birds land.  Good idea but not as functional as I would have liked.  I can attach a little something to make it hang right but I can't keep the regular sized sunflower seeds from falling through the mesh wire.

Pros: cute
Cons: not as functional as I would have liked