A House Wren Troglodytes aedon carries twigs, one at a time, to a nest box.
The male works until he fills the box with twigs, leaving a small cup or cavity.
The female adds soft grasses, fur, feathers, and junk to line the cup where she will lay her eggs.
Below, we peek inside another nest box containing a cozy nest for seven wren eggs.
The female will incubate the eggs for about 2 weeks.
