Aperçu
Nom du projet
L'état des populations d'oiseaux du Canada
Niveau d'accès
privée
Première année
1955
Fin du projet
Ongoing
Ensemble de données
Relevé des populations reproductrices et des habitats de la sauvagine dans l'ouest du Canada et le nord-ouest des États-Unis
À propos
Résumé de l’ensemble de données
The Waterfowl Breeding Population and Habitat Survey (WBPHS) is the longest-running and most spatially extensive waterfowl survey in the world. It covers much of the primary waterfowl nesting areas in mid-continent (i.e., the prairies of western Canada and north-central USA and much of the Canadian western boreal). It is run jointly by the United States Fish and Wildlife Service (USFWS) and Environment and Climate Change Canada's Canadian Wildlife Service (CWS).
Saison(s) et fréquence
Annually during the breeding season (between May and June).
Région géographique couverte
Canada, north-central United States (Montana, Minnesota North Dakota, South Dakota), and Alaska.
Principales espèces couvertes
Waterfowl
Objectifs
Estimate waterfowl population size and trends.
Méthodologie
Plan d’échantillonnage
WBPHS covers the prairies of western Canada and north-central USA, much of the Canadian western boreal, part of Ontario, and some tundra areas in Alaska. The Traditional Survey is comprised of an extensive fixed-wing aerial survey (USFWS) accompanied by ground surveys (CWS).
Méthodes de terrain
In the Traditional Survey Area, the USFWS fly aerial transects in fixed-wing aircraft and observers identify and record the number of waterfowl and ponds seen. To correct for birds missed by the air crews, counts are combined with intensive ground surveys, conducted by Canadian Wildlife Service, on a subset of segments in Alberta, Saskatchewan, and Manitoba. These are used to estimate the proportion of waterfowl and ponds that are detected from the air and calculate annual visibility correction factors. In some of the more remote boreal areas, fixed-wing counts are corrected for visibility using historical correction factors derived from helicopter counts.
Partenaires
U.S. Fish and Wildlife Service
Comment citer
Service canadien de la Faune, U.S. Fish and Wildlife Service, and Environnement et Changement climatique Canada. 2025. "Relevé des populations reproductrices et des habitats de la sauvagine dans l'ouest du Canada et le nord-ouest des États-Unis". Données obtenues de NatureCounts, Oiseaux Canada.