nice...
the real trick with the bucket test is getting the feed at just the right height so that it is just out of reach. They should be able to almost get it (like 1/2 inch away). When the feed is that close they are tempted to just keep reaching over and over.
The passing criteria is that they realize failure and try a new plan. Jumping into a bucket is not intelligent, its the fact that they are learning from failure that shows their intelligent.
Ok well tomorrow I'll flip a regular bucket upright and put feed in the bottom and put them in it and fill with water and see if they can get out, that'll be the real test