Publication Date



College of Natural Resources & Sciences



Document Type



Black-crowned night herons (Nycticorax nycticorax) share the same niche with various competitor species, influencing and effecting their behavior accordingly. Recent studies show that black-crowned night herons are mainly active during dusk and dawn due to the decreased presence of competitor species at these times, suggesting there nocturnal behavior is an adaption. During my study, I observed the proportion of high and low activity of black crowned night herons in relationship to presence of competitor species and the time of day. My data suggest greater numbers of black-crowned night herons with high presence of competitors, and higher activity level with less competition.



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