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 dx.doi.org/10.1676/1559-4491-128.3.624
Journal Wilson Journal of Ornithology
Citation
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