Love from Emily
12 Days of Christmas (Correspondence) - John Julius Norwich
Joan Elliott has gone for the modern Calling Birds (1909 version only) rather than the traditional Colly Birds (1700s onwards) which are blackbirds. I expect she liked the blue rather more than black!
If you are interested in the different versions, check out this Wiki page - The Twelve Days of Christmas. Two versions have Canary Birds, some have Coloured Birds and one has Ducks Quacking (1864), so Emily got off quite lightly there!