A male royal tern in St. Petersburg, FL. The whites come in right at 240/240/240 at the absolute whitest, at the bottom center of the bird's breast (too bright still?). Luckily this bird was too preoccupied vying for attention from the passing females than to pay much attention to the paparazzi.
7d mkII, 500mm f/4 IS, 1/1200 @ f/8, ISO 400.
As always, pick it apart to your hearts' content!
Jake