Has you know visits from a male mean nothing at all he's probably just keeping an eye on the boxes in the area he owns.
Didn't realise that..... good to know.
Set up for 2020: Box 1: East Top view - Blue tit nest started 6th March, abandoned on 8th April. Queen wasp started nest 19th April - Evicted 21st April. Box 2: North Side view - no interest at all. Queen wasp started nest 13th April - Evicted 15th April - Large Spider now living there Box 3: East Top view - old Aldi box. - Great Tit nest started 19th April - 1st egg 30th April - 3 total - all 3 hatched 16th May, all 3 fledged 5th June. Garden Wildlife camera - 5th May - lucky dip!