Invasion of Bullfinches Pyrrhula pyrrhula in western Europe in 2004: a mix of local, ‘trumpeting’ birds and others of unknown origin: Capsule In east Jutland, Denmark, the invasion included individuals of a small-sized local race P. p. coccinea, as well as numbers of two larger forms, which consistently gave either ‘normal’ or ‘trumpeting’ calls on release and whose origins are unknown.

Author： Fox A.D.  

Publisher： Taylor & Francis Ltd

ISSN： 0006-3657

Source： Bird Study, Vol.53, Iss.3, 2006-11, pp. : 294-302

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