Hello. We have a gorgeous little fluffy blue tit sleeping in our bird feeder. She (Belinda) was here last night and has returned to sleep. There is no sign of nesting. Is this normal? She is surrounded by many other bird feeders. So so beautiful.
2013 photos & vids here
eff37 on Flickr
Sounds as if your BT is ok, you say it's fluffy, does it look like a youngster? Not heard of one roosting in an open feeder before!