A.B.A. Checklist: Birds of Continental United States and Canada
The 'Summary' in this edition of the A BA Checklist has been greatly expanded to include all properly documented records for each accidental species. These records are published, except for a very few recent ones which are in press or in preparation. Emphasis is on records supported by specimens or photographs, but sight records are also included. To make these accounts more useful to researchers, a reference has been given for each record. All records, except those identified as '(photo)' or '(specimen)', or by some other type of objective evidence, are sight records. Because of the interest shown in this section of the Checklist, coverage has not been confined to accidental species (defined as those which have occurred fewer than ten times in the ABA Checklist area during the twentieth century). Accounts are also given for selected rare visitors and native species. Two of the primary references are abbreviated in the accounts: Audubon Field Notes-AFN, and American Birds-AB.