Is this going to be the new tenant?

Perhaps triggered by an 8 degrees rise in temperature and the fact that the recent snow has disappeared, some birds are now behaving as if the spring has already arrived.

Today I saw a male blue tit chasing a female near the birdbox. He was showing all the typical spring behaviour like making himself look big, fanning his tail and putting his crest up. He showed a lot of interest in the birdbox, going in and out, jumping around in the tree, landing on the roof, flying around it etc. It appears he was really investigating it as a potential nest site and not just looking for food.

This male blue tit appears to be seriously interested in the birdbox. 

Fortunately this bird is easy to recognise by the black stripe on his chest that is much broader than usual, so I will recognise it when it keeps coming back.