Date of Award:
5-1-1986
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Biology
Department name when degree awarded
Biology Ecology
Committee Chair(s)
Keith L. Dixon
Committee
Keith L. Dixon
Abstract
During 1984 and 1985, a total of 51 Great Blue Heron (Ardea herodias) nests were observed in northern Utah. Rates of parental provisioning to nestlings and number of young fledged were compared to frequencies of thirteen nestling: nestling interactions. Only the unranked provisioning rates: number fledged comparison was found to have a regression slope significantly different from zero. No significant correlation was found between provisioning rate and any nestling interaction. Significant correlations and regression slopes were found between some nestling interactions and number fledged. Sibling aggression did not appear to be a means to bring about brood reduction. Parental activity had little effect on sibling aggression, whereas number of young per nest appeared to have been the most important factor.
Recommended Citation
Sullivan, Joseph P., "Effects of Provisioning Rates and Number Fledged on Sibling Aggression in Great Blue Herons" (1986). Biology. 545.
https://digitalcommons.usu.edu/etd_biology/545
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