On Jan 4, 5:03*pm, Charlie Pridham
wrote:
Right, what I want to know is how big can the holes be before black birds
and thrushes get in? I would quite like to let in the tits, wrens and
other pest eaters so do not want to put back the same size unless I have
to.

Bonne Annee Charlie. I was perusing Harrod Horticultural yesterday for
some fleece (looking at making a tunnel on the cheap) and 8cm mesh
seemed to be the requirement for anti all birds.