D7200 w/28-300mm @ 300mm
ISO 800; f/9, 1/1250; MM -0.33
I've often wondered how the interesting columnar nests of Black-browed Albatrosses were built. Here, a pair on Saunders Island (Falklands) demonstrate how it is done. The male, on the right, repeatedly reached to its left with its beak, scooped up some mud, and flipped it toward the nest. The female on the nest then packed some of the mud onto the sides of the nest.
The image is essentially as framed, to show the area over which the male worked, and the entire nest.