These kind of clouds (called Mother of Pearls) are very rare, but mostly to be seen on the northen part of the earth. This was the first thing I saw one cold morning last winter, and theese two ravens seems to like each other, and looked very happy together, watching the beautiful clouds.
Such a beautiful, unusual sky!!!! I had never heard of or seen "Mother of Pearl" clouds! PLUS you managed to get 2 Ravens in the shot with perfect composition! What a GEM of a photo! :)