Blue Tits inspect nest box - spring is coming!

Andy M heard birds calling insistently in the garden today, and tracked it down to a pair of Blue Tits inspecting a nest box on the side of the house.  One bird (possibly the male) was clearly very happy - blue crest up and blue tail spread - standing guard and calling to the world that this box was theirs, while the other spent ten minutes or so inspecting inside and out.  We'll see whether it passed muster!