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Incubation Constancy, Number of Incubation Recesses, Recess Duration and Mercury Concentrations for Tree Swallows at the Cosumnes River Preserve 2014


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Hartman, C.A., Ackerman, J.T., and Herzog, M.P., 2019, Incubation constancy, number of incubation recesses, recess duration and mercury concentrations for tree swallows at the Cosumnes River Preserve 2014: U.S. Geological Survey data release,


These metadata provide data used to examine tree swallow incubation behavior in relation to egg mercury concentration and maternal blood mercury concentration. These data were collected from tree swallows nesting in artificial wooden nest boxes at the Cosumnes River Preserved in California's Central Valley in 2014. Included are two datasets. One dataset provides daily incubation constancy (the proportion of the day the female spent incubating her eggs), the number of incubation recesses (breaks from incubating) taken by the attending female each day and the total mercury concentration of one egg from the female's clutch, and blood total mercury concentrations collected from the mother. Additionally, we include other ecological covariates: [...]


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Original FGDC Metadata

27.92 KB
IncConstancyNumberOfRecesses.csv 36.26 KB
RecessDuration_Below80.csv 941.09 KB


Data were obtained in order to examine the association between tree swallow incubation behavior (time spent incubating eggs, number of incubation recesses taken, recess duration) and mercury exposure of the female.


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 Data Release Products
  • USGS Western Ecological Research Center



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DOI doi:10.5066/P90QU56J

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