Engeman, R. M, U.S. Department of Agriculture, National Wildlife Research Center, 4101 LaPorte Avenue, Fort Collins, Colorado 80521-2154, United States

• The Canadian Field-Naturalist Vol. 118 No. 2 (2004) - Articles
  Spring Dispersal Patterns of Red-winged Blackbirds, Agelaius phoeniceus, Staging in Eastern South Dakota
  Abstract  PDF