Evaluation of artificial nests as a conservation tool for three forest-dwelling raptors
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Published source details
Björklund H., Valkama J., Saurola P. & Laaksonen T. (2013) Evaluation of artificial nests as a conservation tool for three forest-dwelling raptors. Animal Conservation, 16, 546-555.
Published source details Björklund H., Valkama J., Saurola P. & Laaksonen T. (2013) Evaluation of artificial nests as a conservation tool for three forest-dwelling raptors. Animal Conservation, 16, 546-555.
Summary
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Provide artificial nesting sites for raptors
A replicated, controlled study in 1982-2009 across Finland (Björklund et al. 2013) found that raptors bred in artificial nests, but although brood sizes were similar, nesting success was lower compared to natural nests for two of three species. Nesting success did not differ for honey buzzard Pernis apivorus in artificial (71%) and natural nests (84%), but was lower in artificial nests for northern goshawk Accipiter gentilis (artificial: 87%; natural: 91%) and common buzzard Buteo buteo (artificial: 88%; natural: 93%). For all three species brood sizes were similar between artificial and natural nests (goshawk: average 2.5 chicks/nest; common buzzard: 2.0 chicks/nest; honey buzzard: 1.5 chicks/nest). Platforms for artificial nests were built under the tree crown layer similar to natural nests. Data was collected in multiple years from 2,335 natural and 211 artificial nests inhabited by goshawks, 1,794 natural and 251 artificial common buzzard nests and 421 natural and 38 artificial honey buzzard nests. (Damian Meijerink)
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