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Providing evidence to improve practice

Individual study: Provision of nest boxes and repair of natural cavities for yellow-shouldered amazons Amazona barbadensis on the Macanao Peninsula, Isla Margarita, Venezuela

Published source details

Sanz V., Rodri­guez-Ferraro A., Albornoz M. & Bertsch C. (2003) Use of artificial nests by the yellow-shouldered parrot (Amazona barbadensis). Ornitologê Neotropical, 14, 345-351

This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Provide artificial nesting sites for parrots Bird Conservation

A replicated study in 1993-9 in a tropical forest on an island in Venezuela (Sanz et al. 2003) found that yellow-shouldered Amazons Amazona barbadensis used repaired natural cavities more often than artificial nest boxes. One box of 14 was used in 1997, a second in 1998, and three in 1999 compared with all 15 repaired natural cavities being repeatedly occupied following repair. Fledging rates were also low for nest boxes; with four out of five clutches being removed by poachers (the remaining clutch fledged three chicks). Nest boxes were wooden, 160 x 30 x 30 cm with a 20 x 15 cm entrance hole, had 10 cm of woodchips inside and grooves to allow parrots to climb out. Boxes were placed 2-4 m up in trees, with all used boxes being on Bulnesia arborea trees.