Abstract

Predation has consistently been identified as the most common cause of nest failure for Red- winged Blackbirds (Agelaius phoeniceus). During May and June, 2000 and 2001, we used infrared-triggered camera systems to identify potential nest predators on artificially relocated Red-winged Blackbird nests in eastern North Dakota. For some of the species observed, these observations represent the first documentation of predation on Red-winged Blackbird nests in the northern Great Plains. SINOPSIS. Depredadores de los nidos de Agelaius phoeniceus en Dakota del Norte La depredacion ha sido identificada consistentemente como la causa mas comun de la perdida de nidos en la especie Agelaius phoeniceus. Durante mayo y junio de 2000 y 2001, utilizamos una camara que se disparaba con rayos infrarojos para identificar los posibles depredadores en nidos del ave en discusion. El estudio se llevoa cabo en Dakota del Norte. Se documentaron un considerable numero de visitantes a los nidos vigilados y depredacion por parte de organismos previamente no descritos para las Grandes Planicies.

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