Bullfinch (Pyrrhula pyrrhula) Science Article 1 abstract During October-April of 1989-2003 Imade observations on size and sexual composition of Bullfinch Pyrrhula pyrrhula flocks (ringed and unringed birds), recorded interactions betweenmembers and estimated the body condition of birds observed in amixed forest in central Norway. The flock size did not change with ambient temperature and ranged […]
Tag: Bullfinch
Bullfinch Pyrrhula pyrrhula breeding ecology in lowland farmland and woodland: comparisons across time and habitat
Bullfinch (Pyrrhula pyrrhula) Science Article 2 abstract Bullfinch Pyrrhula pyrrhula populations decreased by 33% in Britain over the years 1977-82, the period of steepest decline. The timing of this decline and its greater severity on farmland (-65%) than in woodland (-28%) point to agricultural intensification as a likely environmental cause, but previous analyses of survival […]