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19 September 2024 A novel case of interspecific brood parasitism by the Prothonotary Warbler (Protonotaria citrea)
Jacob K. Dodson, Matthew J. Scerbicke, Alyssa R. Hall, Brian D. Peer
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Abstract

Secondary cavity-nesting species must find natural cavities or artificial nest boxes to reproduce. Cavities are often limited, which results in intense interference competition among species that rely on them. Nest site shortages may exclude subordinate individuals from cavities and force them to adopt alternative reproductive tactics such as laying eggs in the nests of conspecifics or in the nests of other species. The Prothonotary Warbler (Protonotaria citrea) is a secondary cavity-nesting bird that opportunistically parasitizes conspecifics that has never been recorded parasitizing heterospecifics. Here, we report brood parasitism of a House Wren (Troglodytes aedon) nest by a Prothonotary Warbler and the subsequent fledging of a warbler from this nest. This is the first observation of interspecific brood parasitism for the Prothonotary Warbler and the first instance of interspecific brood parasitism by any New World warbler species.

Especies que anidan en cavidades secundarias deben encontrar cavidades naturales o cajas nido artificiales para reproducirse. Las cavidades son usualmente limitadas, lo que resulta en una intensa competencia por interferencia entre especies que dependen de ellas. La escasez de sitios de anidamiento puede excluir individuos subordinados de las cavidades y obligarlos a adoptar estrategias reproductivas alternativas como poner huevos en nidos de conespecíficos o en nidos de otras especies. La reinita Protonotaria citrea es una ave que anida en cavidades secundarias que parasita oportunisticamente a conespecíficos pero que nunca ha sido grabada parasitando a heteroespecíficos. Aquí reportamos parasitismo de nidada en un nido de saltapared Troglodytes aedon por una reinita Protonotaria citrea y el subsecuente emancipamiento de una reinita de ese nido. Esta es la primera observación de parasitismo de nidada interespecífico por la reinita Protonotaria citrea y la primera instancia de parasitismo de nidada interespecífico por alguna especie de reinita del Nuevo Mundo.

Palabras clave: nido en cavidad, saltapared, Troglodytes aedon.

Jacob K. Dodson, Matthew J. Scerbicke, Alyssa R. Hall, and Brian D. Peer "A novel case of interspecific brood parasitism by the Prothonotary Warbler (Protonotaria citrea)," The Wilson Journal of Ornithology 136(3), 375-379, (19 September 2024). https://doi.org/10.1676/24-00009
Received: 19 January 2024; Accepted: 17 June 2024; Published: 19 September 2024
KEYWORDS
cavity nest
House Wren
Troglodytes aedon
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