So along comes a squirrel and jumps on the feeder. He doesn't like it much and goes to sit on top of the bracket holding the feeder, twitching his tail in agitation. He tries a few times to lower himself along the feeder, but it doesn't bring the tasty grains closer. So he climbs back to the top to think, tail twitching.
Eventually another attempt. Then he figures out that he needs to take a different approach...
... and manages to get the lid off!
Credit where credit's due.
Bloody hell, those little tree rats are smart!