New York Natural Heritage Program
Yellow-crowned Night-Heron
Nyctanassa violacea (Linnaeus, 1758)
Birds

Threats [-]
Breeding and foraging habitat loss due to climate change and human activity, and human disturbance at nest sites are critical threats to Yellow-crowned Night-herons (Watts 1995, McCrimmon 2006). Shifts in temperature can also have negative effects on the heron's main food source, crustaceans, because the emergence of crustaceans is typically temperature dependant (Watts 1995).

Conservation Strategies and Management Practices [-]
In order to maintain good-quality nesting and foraging habitat for Yellow-crowned Night-herons, habitat management and restoration projects, along with a management plan for colonial-nesting herons, is needed (McCrimmon 2006).

Research Needs [-]
More research is needed on the general biology, ecology, and distribution of Yellow-crowned Night-herons, especially juveniles. Investigation of how their food source being temperature dependent affects the heron's breeding and distribution is also needed. (Watts 1995)