Study

Released hand-reared female grey partridges Perdix perdix exhibit poor survival and low reproductive success, Tyrnävä, Pohjois-Pohjanmaa, Finland

  • 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.

Action Category

Release captive-bred individuals into the wild to restore or augment wild populations of gamebirds

Action Link
Bird Conservation
  1. 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.

     

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust