Abstract
Hybridisation between House and Tree Sparrows is reported from islands off the coast of Northern Norway, including observed mating attempts in two different mixed pairs, and the breeding success in a third mixed pair. The biometrics of hybrid offsprings were intermediate between the parents. The hybridisation probably involve only inexperienced individuals and may have been facilitated by the spatially division of the population into small island subpopulations.
Zusammenfassung
Auf Inseln vor der Küste Nordnorwegens gelangen Beobachtungen zur Hybridisation zwischen Haus- und Feldsperling; bei zwei Mischpaaren wurden Kopulationsversuche und bei einem dritten eine erfolgreiche Brut festgestellt. Die Merkmale der F1-Generation waren intermediär. Wahrscheinlich waren nur unerfahrene Vögel an den Mischpaaren beteiligt, die ihrerseits wohl durch die Bildung und räumliche Verteilung von kleinen Inselpopulationen begünstigt wurde.
Literature
Arnold, M. L., &S. A. Hodges (1995): Are natural hybrids fit or unfit relative to their parents? TREE 2: 267–266.
Cordero, P. J. (1990): Phenotypes of juvenile offspring of a mixed pair consisting of a male House Sparrow and a female Tree SparrowPasser spp. Ornis Fennica 67: 52–56.
Ditto &J. D. Summers-Smith (1993): Hybridisation between House and Tree Sparrow (Passer domesticus, P. montanus). J. Orn. 134: 69–77.
Gjershaug, J. O., P. G. Thingstad, S. Eldøy &S. Byrkjeland (1994): Norsk Fugleatlas, Hekkefuglenes utbredelse og bestandsstatus i Norge. NOF/NINA.
Grant, P. R., &Grant B. R. (1992): Hybridization of bird species. Science 256: 193–197.
Summers-Smith, J. D. (1988): The sparrows: a study of the genusPasser. Calton.
Ditto (1995): The Tree Sparrow. Guisborough.
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Solberg, E.J., Ringsby, T.H. Hybridisation between House SparrowPasser domesticus and Tree SparrowPasser montanus . J Ornithol 137, 525–528 (1996). https://doi.org/10.1007/BF01661107
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DOI: https://doi.org/10.1007/BF01661107