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Fertile House Sparrow x Tree Sparrow (Passer domesticus x Passer montanus) hybrids?

E. J. Solberg, Auteur ; T. H. Ringsby, Auteur ; A. Altwegg, Auteur ; B. E. Saether, Auteur

Dans Journal of Ornithology (141(1) JAN 2000)

Viability and a seemingly successful breeding of a Fl House Sparrow x Tree Sparrow hybrid are reported from islands off the coast of northern Norway. From two consecutive clutches of House Sparrow x Tree Sparrow hybrids recorded in 1995, only on[...]

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