1988 mid-winter trumpeter swan survey 1989 mid-winter trumpeter swan survey 1990 mid-winter trumpeter swan survey 1991 mid-winter trumpeter swan survey

Authors(s): C. D. Mitchell

Publication:

Publisher:

Publication Date: 0000-00-00

Type: report from trumpeter swan survey

Location: Red Rock Lakes National Wildlife Refuge

Abstract: These are the reports from the 1988, 1989, 1990 and 1991 mid-winter aerial trumpeter swan survey. The tri-state trumpeter swan survey is an annual survey, conducted during the first or second week of September by the US Fish and Wildlife Service and cooperating state and federal agencies. The purpose of the tri-state survey is to determine population levels and cygnet production of the tri-state trumpeter swan sub-populations in the fall, before wintering swans arrive from the northern latitudes. The area surveyed for trumpeter swans is commonly referred to as the tri-state area, which includes southeastern Idaho, northwestern Wyoming, and southwestern Montana.

Keywords: Grand Teton National Park, Yellowstone National Park, animal studies , management, trumpeter swan, Olor buccinator, annual report, nest, nesting, habitat, reproduction, population, water bird, waterfowl, animal, duck, goose, swan, Anatidae, aerial survey, distribution, Tri-State area, bird, ornithology, Aves, US Fish and Wildlife Service, Idaho