I put 4 fatballs out yesterday in regular bird feeders and by today the squirrels had taken the lot. I assumed that the nuts in the 'squirrel proof feeder - ha ha!' would provide some sustenance for the birdies but the squirrel found a way round that too. The siver sheath slides down to cover the food under light pressure but he quickly learnt that and leapt directly onto the nuts as in the picture.
The birds will just have to starve.
The birds will just have to starve.