By Arbuthnot
Buckinghamshire,
United Kingdom 
There is a lot of blue tit activity in and out of the nest box. It almost looks like they are feeding babies but I can't see close enough to be sure. I do hope they aren't breeding at this time of year. Does anyone have a clue as to what might be going on?
15 Dec, 2016
Answers
Exactly as SBG says feeding on a spiders and other insects and possibly using to roost in too.
15 Dec, 2016
Thank you both. I was worried that the mild (mostly) weather had tempted them to breed. Since that isn't so I can enjoy seeing them without fretting.
15 Dec, 2016
Watched 11 of them come out of one of our boxes which I would have said was a tight fit for 2 of them. Cuddle up for warmth.
15 Dec, 2016
they will be looking for spiders etc and communal roosting sites. they wont have babies at this time of year so no worries there.
15 Dec, 2016