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1 December 2000 Itinerant Breeding and Mate Switching by an American Dipper
Sophie A. H. Osborn
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Several bird species are thought to be itinerant breeders, reproducing in different localities during the same season, but this behavior has been documented conclusively only in the Red-billed Quelea (Quelea quelea). In 1997, I observed a case of itinerant breeding and mate switching by a banded female American Dipper (Cinclus mexicanus) in western Montana. This female raised a successful first brood on a bridge early in the breeding season, then moved 5 km to a neighboring drainage and successfully raised a second brood in a crevice with a different male. This reproductive behavior may have been facilitated in my study area by the use of low-elevation bridges as nest sites by dippers.

Sophie A. H. Osborn "Itinerant Breeding and Mate Switching by an American Dipper," The Wilson Bulletin 112(4), 539-541, (1 December 2000).[0539:IBAMSB]2.0.CO;2
Received: 15 February 2000; Accepted: 1 June 2000; Published: 1 December 2000
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