Maybe he's just checking in to show any other pefa's out there that this belongs to him and Beauty? I know right now in Edmonton at the University, the female was spooked by humans right as she was about to lay eggs and so she flew off and has laid them elsewhere - instead of the box she has used for years. Long story short, another pefa has been visiting the box and the male has had to chase it off a few times already. So he's back and forth between where his mate has laid her eggs and the nest box to keep anyone else from 'moving in'.

What year was that?