This Greater Snow Goose is coming in for a landing on a light cloudy cold autumn day.
The line of white at the bottom of the photo is composed of geese which are in the water.
An advantage of a light cloud cover when photographing the white geese is that there is a more uniform palate of saturated colours, the whites are not washed out due to direct sunlight thereby showing more detail and you reduce harsh black shadows.
It's a mug's game, of course. Too many grey clouds renders everything dull.
Cheers,
Mike