Feeding the birds #2

The question of exactly what is being fed by our garden bird feeders remains as much a live topic as ever.
The squirrel school is going very well. They have trained James to make gradually more difficult puzzles. Each new one can be completed after about a day of hard thought. Then James has to think up a new, more difficult challenge for them. This step by step progression is ideal for honing the problem solving abilities of both James and the squirrels.

And here's WOL, sat waiting by the possibly squirrel proof suet ball feeder. Do WOLs eat blue tits? Alternatively he or she might have been hoping to catch the mousey thing that we have seen burrowing under the house. Either way, I was astonished to see a wild owl only about 2 metres away (through the window).