The Great Tit, Parus major, is a passerine bird in the tit family Paridae. It is a widespread and common species throughout Europe and Asia in any sort of woodland. It is resident, and most Great Tits do not migrate. [Wikipedia]
Who knew?
You know Richard Black at the BBC wrote about these birds just so he could write that headline. And for that, he is our hero of the day.
[BBC: Great tits cope well with warming]
(Thanks, Joe!)