Ashland, AL, USA
This Brown-headed Nuthatch pair has been observed during the past month plus working on constructing a nest cavity in a Pine log fence post. The two frequently alternate, changing places between who is working on the cavity and who is keeping watch in the nearby Sweet Bay tree, and exchanges of feeding take place between the two (included in this video).
As a note: please pardon the initial shaking of the camera, as I finally got my tripod set up towards the end. While you will hear the calls of these birds, there are the sounds of other birds in the background, including our ducks and chickens.