Must Be Peanut Fed

I have been keeping an eye on my tenants in the "back row box"---White Breasted Nuthatches.  But things look quiet.  I think the female is in there, and I am not about to disrupt the proceedings.  I have a few times seen the male, and he is doing his level best to fly peculiar routes and be unobtrustive.  I'd imagine he returns periodically with food offerings.  What BirdCam tells me is that a lot of that may be in the form of peanut pieces.  There are lots and lots of photos of this bird working the peanut feeder.  I can't fault the bird's tastes, or his style.  And I am expecting a well fed little fledgling...soon!