Study

Caging as a technique for rearing wild passerine birds

  • Published source details Hamel R. & McClean I.G. (1989) Caging as a technique for rearing wild passerine birds. The Journal of Wildlife Management, 53, 852-856.

Actions

This study is summarised as evidence for the following.

Action Category

Physically protect nests with individual exclosures/barriers or provide shelters for chicks of songbirds

Action Link
Bird Conservation
  1. Physically protect nests with individual exclosures/barriers or provide shelters for chicks of songbirds

    A small, replicated and controlled study between 1984 and 1988 in northern South Island and Little Barrier Island, New Zealand (Hamel & McClean 1989) found that moving chicks from natural nests into caged artificial nests appeared to increase fledging success in rifleman Acanthisitta chloris (5% of 44 caged chicks died; 94% natural nests destroyed by predators), whitehead Mohoua albicilla (none of 10 caged chicks died; an estimated 0.68 chicks/successful natural nest died, n = 41 nests) , grey gerygone (warbler) Gerygone igata (13% mortality for 15 caged chicks; 33% for nine uncaged chicks) and shining bronze-cuckoo Chrysococcyx lucidus (Chalcites lucidus) (both caged chicks survived, one uncaged chick died, number of uncaged chicks was not given). In addition, a single chaffinch Fringilla coelebs (an introduced species) was caged and survived. In 1987-88, all chicks from one of six caged grey fantail Rhipidura fuliginosa nests died, whereas no uncaged nests were lost. Cages were made of wire-mesh, stretched to ensure that food could be passed through by the parents but that birds’ heads could not be caught.

     

Output references
What Works 2021 cover

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, 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

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


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