Swainsons Thrush (Catharus ustulatus) Science Article 4
Part of the documentation for an ‘out-of-season’ bird may be its being banded by a reputable bander. Since banding data often contribute to patterns of change in bird distribution, it might be advantageous to leave unverified records in the Bird Banding Laboratory’s database with a code indicating that the record hasnot been verified and should be used with caution. Thus, this unverified data would remain available should subsequent data indicate a trend.
Dorothy J. Foy, North American Bird Bander Vol.17,No.2