WHITE-WINGED TERN CHLIDONIAS LEUCOPTERUS
I was watching this white-winged tern (Chlidonias leucopterus) amongst a little tern colony when it stretched its wings ready for take-off. I simply cropped the image fairly tightly to focus on the wonderful symmetry and graphic simplicity of the feather structure against the blue of the lake.
Lake Wollumboola, New South Wales
Canon EOS-1DX, EF 500mm f4L IS + 1.4X extender, 1/3200 @ f8, ISO 640, Mongoose tripod head on Skimmer Ground Podby David Stowe, New South Wales