A is for Accentor

Last month I had an idea for a challenge - a lexicon of birds. 26 letters of the alphabet, 12 months  to do it. True there are always a few difficult letters, but as I've been known to say before, my challenge, my rules. So letter A.....  oops! When I looked up the possibilities, I discovered the birds were shoreline (at this time of year) or seabirds: Avocet, Arctic Tern, Arctic Skua. I'm having t cheat to get started. There is only one resident member of the Accentor family in the UK - the Dunnock.