My turn to take an interest in Liz's tits....

A good start to the day at Dobro Towers: great, blue and long-tailed (puddeny-pokes in this neck of the woods) all waiting for the starlings to finish at the suet balls.

Serious question: where an overflow pipe was removed from the house, there's a small hole halfway up the wall. I've seen blue tits flying up to it and going in, but so far, I haven't seen one coming out. Do you experts know if a blue tit can turn round in such a confined space, or is there an ever-mounting heap of late, deceased, bereft of life blue tits inside the cavity wall? I 'd like to block the hole up to avoid this rather worrying possibility, but would hate to think I'd done so while there's one or two still inside.