THE PRAIRIE NATURALIST Volume 18, No. 2. June 1986

Paul B. Kannowski, Editor Nikki R. Seabloom, Assistant Editor Douglas H. Johnson, Book Review Editor TABLE OF CONTENTS WINTER ECOLOGY OF BALD EAGLES IN SOUTHCENTRAL NEBRASKA ▪ G. R. Lingle and G. L. Krapu NATURAL HISTORY OF THE PLAINS POCKET MOUSE IN AGRICULTURALLY DISTURBED SANDSAGE PRAIRIE ▪ K. M. Reed and J. R. Choate COMMERCIAL SUNFLOWERS: FOOD FOR RED FOXES IN NORTH DAKOTA ▪ A. B. Sargeant, S. H. Allen, and J. P. Fleskes CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1985 ▪ R. N. Randall NEST SITES OF DUCKS IN GRAZED MIXED-GRASS PRAIRIE IN NORTH DAKOTA ▪ H. F. Duebbert, J. T. Lokemoen, and D. E. Sharp PATTERNS AND CAUSES OF CHANGE IN A CLIFF SWALLOW COLONY DURING A 17-YEAR PERIOD ▪ G. L. Krapu WATERFOWL NESTING ON AN EARTH-FILLED CEMENT CULVERT ▪ K. F. Higgins, H. W. Miller, and L. M. Kirsch PIPING PLOVER NEST SUCCESS ON MALLARD ISLAND IN NORTH DAKOTA AND IMPLICATIONS FOR WATER LEVEL MANAGEMENT ▪ M. R. North SEASONAL MOVEMENTS OF RED-WINGED BLACKBIRDS BANDED NEAR KENMARE, NORTH DAKOTA ▪ A. Gammell, R. Gammell, and J. F. Besser NOTE: New Range Records for the Fox Squirrel in the Yellowstone River Drainage, Montana ▪ S. J. Knapp and J. E. Swenson Mailing Date: June 4, 198