Breeding dispersal and demography of wild and hand-reared grey partridges Perdix perdix in Finland
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Published source details
Putaala A. & Hissa R. (1998) Breeding dispersal and demography of wild and hand-reared grey partridges Perdix perdix in Finland. Wildlife Biology, 4, 137-145.
Published source details Putaala A. & Hissa R. (1998) Breeding dispersal and demography of wild and hand-reared grey partridges Perdix perdix in Finland. Wildlife Biology, 4, 137-145.
Actions
This study is summarised as evidence for the following.
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Release captive-bred individuals into the wild to restore or augment wild populations of gamebirds Action Link |
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Release captive-bred individuals into the wild to restore or augment wild populations of gamebirds
A controlled, replicated study (1991-1996) in mixed arable land in central Finland found that, due mainly to poor survival and low reproductive success, releasing hand-reared female grey partridges Perdix perdix contributed little to boosting the local wild population (Putaala & Hissa 1998). Hand-reared females had lower survival during the breeding period than wild females (19% vs. 69%) and wild partridges produced more fledglings than released ones (2.09/female vs. 0.05/female). There was no significant difference in spring dispersal (3.1 km wild; 2.3 km hand-reared), nesting chronology, clutch size (wild average 20.5 eggs vs. hand-reared 19.3 eggs), or nest predation (main cause of mortality in both sets of birds) between wild and hand-reared birds.
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