Blue tits

[paulz]

Do they mate or pair up this time of year?  Got no end in the mini forest outside office window and they're chasing each other around, feeding each other etc

[mrs.pudding]

No, they should have finished by now.  There is the very slightest chance that a pair had a late brood that they're just finishing feeding now.  But they tend to go round in gangs and seem to be quite sociable with one another so perhaps that's what's happening.