What's eating my hummer nectar?
I have two feeders up and every morning the nectar is gone. I have them situated about three feet up from the deck supports and I have noticed dirt stains on the rail below them. I know they are not leaking and if a critter of some kind like a squirrel or coon is standing on the rail I don't think it can reach the feeders. If they jump at them they would knock the feeders down. But the feeders look undisturbed except that they are empty in the morning. What could this be?