Population sizes, habitat associations, and distributions for 143 landbird species to support status assessment, regional planning, conservation prioritization, and recovery of species at risk.


Project summary


In 2020, BAM launched version 4.0 of our Canada-wide density models for 143 species of landbirds.


The development of national-scale products is challenged by sparse data in remote regions, complex species’ responses to environmental factors, regional variation in habitat selection and more. However, reliable information on species’ population sizes, trends, habitat associations, and distributions is important for conservation planning and management.


To support avian conservation in Canada, BAM developed a generalized analytical approach to model species densities in relation to environmental covariates. We used the BAM database and built models for 143 species.  Learn more about these methods and models



Data Products


We provide data and maps of population sizes, habitat associations, and distributions for 143 landbird species. We provide our density results as 1 km² resolution raster layers, which are used to calculate population sizes and regional habitat associations. Explore Species Maps and Results





Watch a video to learn more about this modelling approach, how to discover the data products, and future applications of this work. Watch a video to learn more



Coming soon

Version 5.0 of BAM’s landbird density models will include:

– expanded study area to include hemi-boreal regions of the continental United States, using natural biogeographic rather than political boundaries to delineate sub-regions;

– expanded list of environmental covariates including time-matched variables for vegetation biomass, human disturbance, and annual climate;

– acquisition and inclusion of new datasets for data-sparse regions, including appropriate eBird data;

– predictions for five-year intervals from 1985 to 2020.