A beautiful Snow Bunting (Plectrophenax nivalis) in breeding plumage.
Snow Bunting Distribution
After a bit of research, I found that Snow Buntings visit the Azores on a pretty rare frequency, but they have been recorded here every month of the year. They Winter in warmer climates, and then they head back to the Artic Circle to breed in late Winter to Early Spring. This guy must have been trying to avoid the cold since it is already Summer here now, and he has quite a ways to go.
Male Snow Bunting in Winter.
Snow Buntings may be common where you are from, but for me, this was my first sighting. Being such a bird-nerd, I still get really excited about first spottings. I hope I never lose that.