THE PRAIRIE NATURALIST Volume 18, No. 1. March 1986

Paul B. Kannowski, Editor Nikki R. Seabloom, Assistant Editor Douglas H. Johnson, Book Review Editor TABLE OF CONTENTS INVASION PATTERN MAPPING OF NON-SEEDED SPECIES ON A SHALLOWLY DISTURBED SEEDED SITE ▪ C. E. Grygiel, C. D. Bonham, and E. F. Redente CHANGES IN THE LICHEN FLORA OF PIPESTONE NATIONAL MONUMENT, MINNESOTA ▪ G. D. Willson and T. W. Vinyard INTERPOPULATION VARIABILITY IN MOUTHPARTS IN Scaphiopus bombifrons IN NEBRASKA (AMPHIBIA: PELOBATIDAE) ▪ T. L. Potthoff and J. D. Lynch PLANTS AND INVERTEBRATES IN A PRAIRIE WETLAND DURING DUCK BROOD-REARING J. W. McCrady, W. A. Wentz, and R. L. Linder OCCURRENCE OF A SAGE GROUSE/SHARP-TAILED GROUSE HYBRID IN NORTH DAKOTA ▪ S. C. Kohn and G. D. Kobriger HISTORICAL BIOGEOGRAPHY OF THE WOODCHUCK IN KANSAS J. R. Choate and K. M. Reed SUBSPECIFIC STATUS OF THE BIG BROWN BAT, Eptesicus fuscus, IN KANSAS J. R. Choate, J. W. Dragoo, J. K. Jones, Jr., and J. A. Howard NOTES Barn Owl Nest in Artificial Nesting Cavity at Arrowwood National Wildlife Refuge, North Dakota ▪ P. C. Van Ningen Use of Abandoned Cliff Swallow Nests by Breeding House Wrens ▪ K. J. Gutzwiller and S. H. Anderson Least Bittern at J. Clark Salyer National Wildlife Refuge, North Dakota ▪ D. Blockstein BOOK REVIEWS North Dakota\u27s Turtle River ▪ T. F. Waters A Nebraska Bird Book ▪ J. J. Dinsmore A New Wildlife Text ▪ I. J. Ball A Compendium of the World\u27s Birds ▪ D. H. Johnson Birds and Wetlands: A World View ▪ P. M. Konrad Wildfowl ▪ M. W. Weller SUGGESTIONS FOR CONTRIBUTORS Editor CORRECTION Mailing Date: March 3, 198