Elizabeth A. McCullagh, Daniel A. Cristol and John B. Phillips. "Plumage color and reproductive output of eastern bluebirds (Sialia sialis) nesting near a mercury-contaminated river" Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Vol. 50 Iss. 10 (2015) p. 1020 - 1028
Available at: http://works.bepress.com/daniel-cristol/33/