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A review of the population estimation approach of the North American Landbird Conservation Plan
Thogmartin, W. E., Howe, F. P., James, F. C., Johnson, D. H., Reed, E. T., Sauer, J. R., and Thompson, F. R., 2006, A review of the population estimation approach of the North American Landbird Conservation Plan: Auk, v. 123, no. 3, p. 892-904.
Keywords
Breeding Bird Survey, Cerulean warblers, point counts, abundance, roads