New World Warblers represent a complex and closely related family, with a high propensity to hybridize. With more than 73 known hybrid pairings of Parulidae documented, we report a previously undocumented hybrid: a Chestnut-sided (Setophaga pensylvanica) × Magnolia Warbler (S. magnolia). The parentage of the hybrid individual and its identity are supported by morphological and genetic evidence. DNA sequencing of a fragment of cytochrome oxidase c subunit I (COI) supports the female parent as Chestnut-sided, while strong morphological features support Magnolia Warbler as the father.

Additional Metadata
Keywords hybrid, New World Warbler, Parulidae, Setophaga magnolia, Setophaga pensylvanica
Persistent URL
Journal Wilson Journal of Ornithology
Burrell, K.G.D. (Kenneth G.D.), Skevington, J.H, Kelso, S. (Scott), Burrell, M.V.A. (Mike V.A.), Leclair, D.L. (Dayna L.), & Mackenzie, S.A. (Stuart A.). (2016). A previously undocumented hybrid New World Warbler (Setophaga pensylvanica x S. magnolia) captured at Long Point, Ontario. Wilson Journal of Ornithology, 128(3), 624–628. doi:10.1676/1559-4491-128.3.624