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Population Trends of Ring-billed Gulls Breeding on the North American Great Lakes, 1976 to 2009. Waterbirds. 34(2):202-212.. 2011.
The Double-crested Cormorant in eastern and central North America: a summary of status and selected research. Cormorant Research Group Bulletin. 4:5-9.. 2000.
Trends in Caspian Tern numbers and distribution in North America: a review. Waterbirds. 23(3):388-404.. 2000.
Double-crested Cormorants in the Midwest: symposium summary. Proceedings of the 1997 Symposium on Double-Crested Cormorants: Population Status and Management Issues in the Midwest. :159-162.. 1999.
Nesting populations of Double-crested Cormorants in the United States and Canada. Proceedings of the 1997 Symposium on Double-Crested Cormorants: Population Status and Management Issues in the Midwest. :17-25.. 1999.