Individual study: Legislative protection reduces nest take of wild parrots and may increase nest survival
Pain D.J., Martins T.L.F., Boussekey M., Diaz S.H., Downs C.T., Ekstrom J.M.M., Garnett S., Gilardi J.D., McNiven D., Primot P., Rouys S., Saoumoe S., Symes C.T., Tamungang S.A. & Theuerkauf J. (2006) Impact of protection on nest take and nesting success of parrots in Africa, Asia and Australasia. Animal Conservation, 9, 322-330
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Use legislative regulation to protect wild populations
A literature review and meta-analysis (Pain et al. 2006) found that protective legislation reduced nest-take (the percentage of nests from which chicks were removed by people) in wild parrots and may increase nest success. Across 20 species-country combinations, medium (involving either national or local protection) and high (involving both) levels of protection significantly reduced nest-take between 4.5 and 50 times compared to low levels of protection (unenforced, ambiguous or absent local or national protection). These results excluded a Nigerian study based on trapper surveys and with 100% nest-take, but included Australian data – Australia being the most developed country in the analysis and with a disproportionate number of studies. If both countries were excluded then medium and high protection resulted in a significant (170%) increase in nest success. However, if all data were included then there was a non-significant increase in nest success.