Relationships Between Habitat and Snag Characteristics and the Reproductive Success of the Brown-headed Nuthatch (Sitta pusilla) in Eastern Texas

Autor:	Richard N. Conner, L. Lynnette Dornak, D. Brent Burt, Dean W. Coble
Rok vydání:	2004
Předmět:	Reproductive success Nest biology Ecology Plant litter biology.organism_classification Bird nest Sitta pusilla Ecology Evolution Behavior and Systematics Nuthatch Snag Predation
Zdroj:	Southeastern Naturalist. 3:683-694
ISSN:	1938-5412 1528-7092
DOI:	10.1656/1528-7092(2004)003[0683:rbhasc]2.0.co;2
Popis:	Habitat use and reproductive success of the Brown-headed Nuthatch (Sitta pusilla Latham) were studied in East Texas during the 2001-2002 breed- ing seasons. We compared nest cavity selection at used and randomly selected non-used areas. Height of nest trees, midstory density, and percent leaf litter were negatively correlated with nest site selection. Brown-headed Nuthatches showed a strong preference for short snags; yet placed their nest cavity en- trances near the top of the snags. While nuthatches may be selecting for habitats with little or no midstory density, percent of leaf litter in the nest sites is most likely the consequence of frequent burning. No significant differences among habitat variables and snag characteristics were found between successful and failed nest cavities. Additionally, no habitat variables were correlated with the number of chicks fledged per nest. Predation was the major cause of nest failure in this study.
Databáze:	OpenAIRE
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