Canadian Migration Monitoring Network
By Request
1993
CMMN was launched in 1998 as an ongoing monitoring program. The first migration monitoring station in North America was LPBO, started in 1960. The station was established in 1992, standard monitoring began in 1996.
This dataset contains daily estimated totals (DET) from the Delta Marsh Bird Observatory. DET is a standard protocol used by Canadian Migration Monitoring Network stations to estimate the total number of individuals of each species occurring at a site during migration.
Spring coverage begins 1 May and continues into the first week of June; fall coverage begins 8 July and runs through to the end of September.
Located near Portage la Prairie, Manitoba (50°11'41.1"N, 98°15'27.3"W)
Primary focus is landbirds (104 priority species) but some stations also monitor waterbirds, raptors.
To generate counts of migrating birds for use in long-term population monitoring, especially landbird species not monitored by current breeding or winter surveys; To carry out cooperative research projects on the ecology of migrating birds.
Standardized captures and observations used to derive daily estimated total throughout migration window.
Combination of standardized daily captures, census, visible migration counts and other observations resulting in a daily estimated total for each species.
Most stations produce some form of annual report for members.
Delta Marsh Bird Observatory. 2025. "CMMN Daily Estimated Totals: Delta Marsh Bird Observatory". Data accessed from NatureCounts, Birds Canada. 10.71842/t4gt-1y43
