northern America = South Carolina, USA.
Previously placed in genus Parula, along with S. pitiayumi, as well as Oreothlypis gutturalis and O. superciliosa (which are closer to Vermivora). Has hybridized with S. dominica, as well as with S. ruticilla and S. coronata. Sometimes considered conspecific with S. pitiayumi, but the two differ in migratory behaviour and plumage characters. NE populations proposed as race pusilla (described from Pennsylvania) and W ones as race ludoviciana (from Mississippi Valley), the latter based on difference in Type 1 song; both generally considered insufficiently differentiated to warrant recognition. Monotypic.
SE Canada (SE Manitoba E to Nova Scotia) and E USA (Minnesota, Michigan and New England S, excluding most of S Great Lakes area, to Gulf of Mexico coast and C Florida). Winters from E Mexico S to Honduras (rare to C Panama), and in West Indies; also winters in smaller numbers in S Florida and Bermuda.
Food and feeding
Status and conservation
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