With a bit of post processing tweaking, even a cloudy day can be okay for Snowy Owl photos.

I chose a warmer golden tint to complement the vegetation over the cooler blue one, all the while not wanting to overcorrect for white.

Canon 5D Mark III with my 500L f4 lens handheld @v 1/1000, f4, ISO 400, + 1/2 exposure compensation.

Cropped in for composition purposes.

Cheers,

Mike