As we stood in the courtyard, Lovely Warden noticed a blue tit coming and going from one of the boxes. He waited until she'd flown off and had carefully lifted the lid on the box. Peering into the gloom within, he suddenly broke into a wide grin. "I thought so," he said. "I could see it was worms she was taking in, not nest material." He beckoned me over. There in the box was a fluffy mass of baby blue tits.
"Awwwwww," I said, going into instant soppy mode. "Fancy choosing here, where all the public come to buy plants! Ooh, I'd better make a sign!" I had horrible visions of someone picking up the box and rattling it, not knowing it was in use. Since then, I've discovered the box next door has also got a nest inside - no chicks yet, but two eggs. We saw the same blue tit going into both boxes.
"Can it really have two homes on the go?" I asked.
"Oh yes," nodded Lovely Warden. "If it's from Local Town it's probably servicing the whole street."