This notice corrects the following errors from the 51st Supplement to the Check-list of North American Birds (Auk 127:726–744):
In the supplement, the North American species Melanitta americana was separated from the species Melanitta nigra. On pp. 727 and 731, the supplement erroneously stated that the English name of M. americana should become American Scoter. Instead the English name Black Scoter stays with M. americana, and the English name of M. nigra, now restricted to Eurasia, becomes Common Scoter. On p. 727 of the supplement, replace Melanitta americana American Scoter with Melanitta americana Black Scoter. In the species account for Melanitta americana on p. 731, replace American Scoter with Black Scoter, and in the Notes to the species account on p. 731, replace Black Scoter with Common Scoter.
In the supplement, the sequence of species in the genus Cyanolyca was rearranged. The correct sequence was provided on p. 728, whereas the sequence listed on p. 734 was incorrect. On p. 734 of the supplement, change the sequence of species of Cyanolyca to the following:
In the supplement, the sequence of species already included in the genus Melozone was rearranged. This change was correctly noted on p. 737 of the supplement, but the change was not included in the listing of rearrangements on p. 729. On p. 729 of the supplement, preceding “Move Amphispiza quinquestriata to precede Amphispiza bilineata”, insert the following:
Rearrange the species in Melozone, including those moved here from the genus Pipilo, to: