Search Results

Probable Common Flicker Nest on the North Slope of the Brooks Range, Alaska

by Ritchie, Robert J.
Published in The Murrelet (1978)

Porcupine Quill and Beetles in Peregrine Castings, Yukon River, Alaska

by Ritchie, Robert J.
Published 2024

Distribution and Population Status of Bald Eagles (Haliaeetus leucocephalus) in Interior Alaska

by Ritchie, Robert J., Ambrose, Skip
Published in ARCTIC (1996)

Distribution and Population Status of Bald Eagles (<i>Haliaeetus leucocephalus</i>) in Interior Alaska

by Ritchie, Robert J., Ambrose, Skip
Published in ARCTIC (1996)

Tundra Swans

by Ritchie, Robert J., King, James G.
Published 2000

Status of the Peregrine Falcon, Falco peregrinus, in the central Kuskokwim River region, Alaska

by Ritchie, Robert J, Ambrose, Robert E.
Published 1978

Notes on Golden Eagle Productivity and Nest Site Characteristics, Porcupine River, Alaska, 1979-1982

by Ritchie, Robert J., Curatolo, James A.
Published 2024

Status and nesting distribution of Lesser Snow Geese, Chen caerulescens caerulescens, and Brant, Branta bernicla nigricans, on the western Arctic Coastal Plain, Alaska

by Ritchie, Robert J, Burgess, Robert M., Suydam, Robert S.
Published 2000

Peregrine Falcons (Falco peregrinus) nest in a quarry and on highway cutbanks in Alaska

by Ritchie, Robert J, Doyle, T J, Wright, J M
Published 1998

Comments on the Status of Certain Birds on the North Slope of Alaska

by Swem, Theodor R., White, Clayton M., Ritchie, Robert J.
Published in Northwestern Naturalist (1992)

Peregrine Falcons nesting on lake bluffs on the Arctic Coastal Plain of northern Alaska

by Ritchie, Robert J, Wildman, A M, White, C M
Published 2004

Peregrine Falcons Nesting on Lake Bluffs on the Arctic Coastal Plain of Northern Alaska

by Ritchie, Robert J., Wildman, Ann M., White, Clayton M.
Published 2024

Peregrine Falcons (falco Peregrinus) Nest in a Quarry and on Highway Cutbanks in Alaska

by Ritchie, Robert J., Doyle, Terry J., Wright, John M.
Published 2024

Recovery of American peregrine falcons along the upper Yukon River, Alaska

by Ambrose, Skip, Florian, Chris, Ritchie, Robert J., Payer, David, O'brien, Robert M.
Published in The Journal of Wildlife Management (2016)

The Effects of Noise on Birds of Prey: A Study of Peregrine Falcons (Falco peregrinus) in Alaska

by Roby, Daniel D., Murphy, Stephen M., Ritchie, Robert J., Smith, Michael D., Palmer, Angela G.
Published 2002

Spatial distribution of band recoveries of black brant

by Leach, Alan G., Ward, David H., Sedinger, James S., Riecke, Thomas V., Hupp, Jerry W., Ritchie, Robert J.
Published in The Journal of Wildlife Management (2018)

Declining survival of black brant from subarctic and arctic breeding areas

by Leach, Alan G., Ward, David H., Sedinger, James S., Lindberg, Mark S., Boyd, W. Sean, Hupp, Jerry W., Ritchie, Robert J.
Published in The Journal of Wildlife Management (2017)

Contributors

by Arnstrup, Steven C., Ballard, Warren B., Burgess, Robert M., Cronin, Matthew A., Dunton, Kenneth H., Fechhelm, Robert G., Gallaway, Benny J., George, John C., Gilders, Michelle A., Hechtel, John, Howard, Randall L., Johnson, Stephen R., Kertell, Kenneth, King, James G., Lawhead, Brian E., McKendrick, Jay D., Moulton, Lawrence L., Murphy, Stephen M., Ritchie, Robert J., Shonberg, Susan V., Sedinger, James S., Shideler, Richard, Stickney, Alice A., Troy, Declan M., Truett, Joe C., Whitlaw, Heather A.
Published 2000