Nest-site characteristics of Northern Waterthrushes
| Autor: | Allison L. Fisher, Shawn E. Roberts, Ian G. Warkentin, Stephen P. Flemming |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Journal of Field Ornithology. 75:79-88 |
| ISSN: | 1557-9263 0273-8570 |
| Popis: | We describe the nest-site characteristics of Northern Waterthrushes (Seiurus noveboracensis) in western Newfoundland. Based on data for 36 nests (20 in streambanks, 16 in overturned trees) and 108 comparative sites, we examined habitat features at microhabitat (a 25-cm radius around the nest) and macrohabitat (a 5-m radius, and position on the landscape) scales. Assessment of microhabitat variables indicated that features around nests in the roots of overturned trees were no different from randomly selected sites. However, streambank nest-site features at this spatial scale distinguished these nest sites from randomly selected streambank locations through the presence of greater substrate slope and less leafy vegetation around nests. At broader spatial scales, streambank nests did not differ from associated random sites, but the macrohabitat features of nests in overturned trees distinguished them from randomly selected overturned-tree sites through overturned-tree nests being closer to water and... |
| Databáze: | OpenAIRE |
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