Aperçu
Nom du projet
Réseau canadien de surveillance des migrations
Niveau d'accès
par requête
Première année
1991
Fin du projet
Ongoing
Ensemble de données
RCSM - totaux quotidiens estimés: Thunder Cape Bird Observatory
À propos
Résumé de l’ensemble de données
Counts from Thunder Cape Bird Observatory (TCBO) of birds banded and observed during daily operations; plus a composite Daily Estimated Total (DET): the best estimate for each species of unduplicated number of individuals detected within the official count area during the daily monitoring period
Saison(s) et fréquence
Daily from last week of April into early June, and from 1 August until 31 October
Région géographique couverte
Located near Thunder Bay, northwestern Ontario (48.3, -88.93). Migrants at the site originate primarily from breeding range in Manitoba and Ontario, but isotopic studies indicate that a portion of individuals of some species come from Northwest Territories
Principales espèces couvertes
Captures are primarily small passerines, but all species observed are recorded
Objectifs
To conduct standardized daily migration season counts and collect ancillary data on migration ecology for use in long-term biological and population monitoring of Canada’s bird species
Méthodologie
Plan d’échantillonnage
Daily capture and observation during migration seasons to generate species-specific daily totals of birds detected within each study site
Méthodes de terrain
Daily operations (standardized in 1999) include 7 hours of banding (starting 45 min before sunset, using 4 passerine nets, 8 hawk nets, 8 ground traps, a J-trap and 2 Heligoland traps), and a 6-hour watch from a platform. Incidental observations are recorded for the remainder of the day
Méthodes d'analyse
See Quick Links. Population trends for ‘Regular Migrants’ at this site are based on counts from standardized methods only (numbers banded and recorded on the 6-hr watch), while trends for all other species are based on Daily Estimated Totals that include incidental observations
Suggestions
Any disruption to standardized operations relevant to appropriate interpretation of analytical results is noted in a regularly-updated section of the station protocol. As of 2025, the only alert to users of this dataset is that due to covid restrictions, the station was closed in spring of 2020 and fall coverage in that year was reduced.
Partenaires
Thunder Cape Bird Observatory
Comment citer
Oiseaux Canada and Thunder Cape Bird Observatory. 2026. "RCSM - totaux quotidiens estimés: Thunder Cape Bird Observatory". Données obtenues de NatureCounts, Oiseaux Canada. 10.71842/n2v8-2q89
