Composition of cavity-nesting bird communities in montane aspen woodland fragments: the roles of landscape context and forest structure
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Published source details
Lawler J.J. & Edwards T.C. Jr. (2002) Composition of cavity-nesting bird communities in montane aspen woodland fragments: the roles of landscape context and forest structure. The Condor, 104, 890-896.
Published source details Lawler J.J. & Edwards T.C. Jr. (2002) Composition of cavity-nesting bird communities in montane aspen woodland fragments: the roles of landscape context and forest structure. The Condor, 104, 890-896.
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This study is summarised as evidence for the following.
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Provide artificial nesting sites for songbirds Action Link |
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Provide artificial nesting sites for songbirds
A replicated trial in June-August 1997-8 at 12 sites with differing tree densities in Utah, USA (Lawler & Edwards 2002), found that only 2% of 120 nest boxes erected were occupied by birds: four by tree swallows Tachycineta bicolor and one by mountain bluebirds Sialia currucoides. All five occupied boxes were in sparsely-treed meadows, with none in densely-treed meadows or forests. The low uptake may have been due to large numbers of suitable natural cavities, with 15% of 271 natural cavities surveyed containing bird nests.
