One Tough Momma

One must truly marvel at some of our passerines.  In the hottest part of summer they can hole up in a nest box, which despite ventilation holes must be a hothouse, and tough out an incubation period.  And I still marvel even if the bird in question here is a House Wren who's elbowed out Eastern Bluebirds.  Momma wren has been on station for many days.  I can easily see if she's home by "pishing":  right away she sticks her head out to see what blasted fool is making a racket.  Hatching must be soon.  I will leave her (and any fledglings) in peace, but I am in a hurry to eliminate the nest as soon as I can.  For now, I marvel at how tough a Momma she is.