The secret maternity ward....

She's in there.   The mother pigeon sitting on her eggs - in the intricate darkness I can just get a sight of her.    But to get a camera into position would inevitably scare her.    I'll look out for a better chance.

It's a rotten place for her.   Last year she lost her first clutch to crows.   She promptly laid another, and lost those the same way.

Nature red in tooth and claw - or, in this case, in beak.