Blue tits in our nesting box

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For the first time since we put it up several years ago, we have a pair of blue tits using our nesting box this spring. We have been monitoring it since we noticed they’d taken an interest in it around February. Watched them building a nest and generally going in and out. A few days ago the eggs hatched and they have been going in and out constantly with little green catepillars and whatever else they can find to keep them fed. It makes for compuslive viewing!