It's getting to be quite crowded in the birdhouse.  The rate of growth is unbelievable.  According to what I have read, fledging could take another week or so.  But at least one chick has been spreading its wings a little.  I wonder just how much longer before they leave.

They no longer sound like chicks.  Instead of chirping lightly, they have been really making a racket.

All 6 are still there.