This bird, which is visiting Box2 at just before 10 this morning, is clearly female (see the nesting wriggle later) and is the bird that that has made us wonder whether Fluffy is back again.
We're probably a bit obsessed about Fluffy, but she is a feisty bird. In 2003 she successfully finished rearing her chicks after her partner disappeared a few days before they fledged when they were at their most demanding.