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Black-crowned Night-Heron Incubation Behavior Data from Alcatraz Island, 2011-2012 (includes nesting gull data)


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Coates, P.S., Brussee, B.E., Hothem, R.L., Howe, K.H., and Casazza, M.L., 2015, The Effects of Heterospecifics and Climatic Conditions on Incubation Behavior within a Mixed-Species Colony: U.S. Geological Survey data release,


We conducted a multi-year study (2010–2012) to investigate ecological factors that affect incubation behavior of nesting black-crowned night-herons Nycticorax nycticorax (hereinafter night-herons) on Alcatraz Island, California. This dataset includes incubation behavior data collected using video-monitoring techniques, as well as explanatory variables (temporal, weather, and nest site characteristics) from 2011-2012, and includes data for 126 video-monitored nest days across 64 nests (30 in 2011, and 34 in 2012). This dataset was used to model two different incubation behaviors (i.e. incubation constancy, and nest attendance), with respect to temporal, weather, and nest site characteristic variables, and specifically to investigate [...]


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NightHeron Incubation Data with Gulls.csv
“Tabular Digital Data”
55.44 KB
Night Heron Incubation Data with Gulls_FGDC.xml
Original FGDC Metadata

28.43 KB


The principle objective of this study was to explain variation in incubation behavior of night-herons by investigating effects of heterospecifics, climatic conditions, within-season temporal effects, and other ecological factors.


The authors of these data require that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government



  • USGS Western Ecological Research Center



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Additional Information


Type Scheme Key
DOI 10.5066/F7TT4P1K

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