RCSM - totaux quotidiens estimés: Long Point Bird Observatory

Méthodologie

Daily operations include 6 hr of banding from dawn onward, a standardized census of about an hour, and active birding to compile additional observations throughout the entire day (typically 10-12 hours of field effort). Standard number of passerine nets (12 m; 5 panel; 32 mm mesh) at each site are: 12 at the Tip site (plus 2 J-traps and 4 ground traps), 13 at Breakwater (plus 2 J-traps and 4 ground traps) and 14 at Old Cut (plus 1 J-trap and 4 Ground traps)

See Quick Links. Population trends for all species at LPBO are calculated from a model using Daily Estimated Totals from all 3 sites, but the data can be analysed separately if desired

Any disruption to standardized operations relevant to appropriate interpretation of analytical results is noted in a regularly-updated section of the station protocol (https://www.birdscanada.org/bird-science/cmmn-protocols). As of 2026, the following alerts should be noted. Population trends for years prior to 1983 are based on data from only two of the three stations on Long Point. As well, the Tip station is subject to long-term changes in land-form and vegetation due to flooding and erosion as Lake Erie water levels fluctuate. Daily Estimated Totals were designed from the outset to collect consistent data on number of birds present daily at the eastern end of the Point, and this goal has been maintained to the extent feasible; e.g., the census route configuration has remained similar despite a major westward shift of banding operations (about 250m) that became necessary in 2020. Nonetheless, it should be noted that several types of permanent traps (Heligoland, J-traps) have been built then lost to waves over the decades that likely affected counts of some species in some years. Pandemic restrictions in 2020-2021 precluded operation of the Breakwater station, and reduced participant numbers at the Tip (both years) and at Old Cut (spring of 2020 only)