Cover characteristics and success of natural and artificial duck nests / Karla L. Guyn and Robert G. Clark.
Material type:
TextSeries: Journal of Field Ornithology. 68(1) 33-41 Publication details: 1997.Description: 28 cmLOC classification: - GUY
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Includes bibliographical references (pages 40-41).
Artificial nests have become an important tool for avian ecologisLS. Results olr
rained with artificial nests are sometimes used to predict success of natural nests or to characterize
spaticrtemporal changes in success of natural nests, but only rarely is success of
artificial and natural nests actually compared. We found no correlation between success of
natural and artificial duck nests in the same year, nor did artificial nests accurately portray
between-year changes in survival of natural nest.;;. Furthermore, despite extensive experience
working with natural duck nests, we were unable to place artificial nests in locations that
matched vegetative characteristics of natural nest sites. Natural nests had denser, taller vegetation
than artificial ones. Overhead concealment was greater at successful natural nests,
but no difference was found with artificial nest.;;. Researchers should be cautious when using
artificial nests 10 predict natural nest success and should be aware of possible differences in
vegetative features that may affect nest survival.