lol - I was gonna mention what Michelle has demonstrated!! I saw a great wildlife program over here where they started off with a bird table which the squirrels got to. They made it harder to get to until the squirrels did it, then added another stage for them to get by etc etc. Things like tubes with a gate in the middle and a switch for them to hit which opened the gate for a few seconds, that sort of thing. Over a month or so they ended up learning about 10-15 of these challenges!! Yup, they'll suss THAT one quick enough, but you should get some good shots out of it ;-) (",)