Attack on the bird feeders

This morning the on-glass bird feeder was dislodged and the feeding tray was detached.  This is the first time this feeder has been displaced since we had it over a year ago.

Another feeder hanging from the nearby garage wall mount had also been removed and was lying broken on the ground.  Something was amiss!

Checking the evidence, there were muddy paw prints either side of the conservatory frame upright, near to the location of the feeders.

The horizontal frame also displayed a set of muddy paw prints.  This is quite a slippery surface for something to be climbing up.  The paw prints were quite small.

Now - who in the garden has a guilty look about them?

 I wonder...........!