North American Crane Working Group

 

Date of this Version

1992

Document Type

Article

Citation

Provost, Jodie L., Thomas A. Provost, Stephen J. Maxson, and Richard D. Crawford. "Breeding Biology of Greater Sandhill Cranes on the Roseau River Wildlife Management Area, Minnesota.", In: Stahlecker D. W., ed. 1992. Proceedings of the Sixth North American Crane Workshop, Oct. 3-5, 1991, Regina, Sask. (Grand Island, NE.: North American Crane Working Group, 1992), 69-74.

Comments

Conference co-sponsored by the Canadian Wildlife Service, Saskatchewan Parks and Renewable Resources Department, and the Whooping Crane Conservation Association, Canadian Council. Proceedings used by permission of the North American Crane Working Group.

Abstract

The breeding biology of greater sandhill cranes (Grus canadensis tabida) on the Roseau River Wildlife Management Area in northwestern Minnesota wa.'I studied from April 1989 to October 1990. A minimum of 0.25 breeding pair per km2 of wetland and upland nested on the study area. Except for distances to nearest shrub from nest and random sites (P = 0.047), there were DO significant differences among mean habitat values or distributions of variables measured at nest and random sites (P > 0.05). Mean clutch size was 1.88 ± 0.33 (SD) eggs for 17 clutches in 1989 and 1990. In 1990, estimated hatch dates for 13 clutches ranged from 21 May to 12 June (x = 30 May ± 6.6 days [SD]), apparent egg hatching success was 69.2% (n = 26), and apparent and Mayfield corrected nest success were 73.3% (n = IS) and 53.8% (n = 14), respectively.