BIRD DENSITIES & POPULATION ESTIMATES
National and regional scale landbird and waterfowl densities, population estimates and distributions for over 160 species.
Canada-wide landbird densities
| Version 4 (2020): | a generalized analytical approach using boosted regression tree models to model species density in relation to environmental covariates, using the BAM database of point-count surveys (through 2018) and widely available spatial predictors. |
| Previous Versions: | |
| Version 3 (2014): | density estimates and population sizes for select species (Canada Warbler, Olive-sided Flycatcher, and Common Nighthawk) using branching generalized linear models (select species only). |
| Version 2 (2015): | current and projected avian distribution and density for 93 boreal-breeding songbird species using climate-based boosted regression tree models. |
| Version 1 (2012): | relative density of 70 landbird species using landcover-based generalized linear models. |
Waterfowl density & distribution
| Canada-wide density | |
| Version 2 (2020): | spatiotemporal abundance of 18 breeding waterfowl species across Canada using hierarchical generalized linear models. |
| Version 1 (2014): | boosted regression tree models to predict the distribution and abundance of 17 breeding duck species in Canada. |
| Regional future density | |
| Eastern Canada (2020): | future density projections of the distribution and abundance of breeding waterfowl in Eastern Canada. |
Regional density & population estimates
| BCR Regions: | density (males/ha) and population size for 143 landbird species within Bird Conservation Regions in Canada |
| BCR 6 (Alberta): | population-size estimates for 95 landbird species for Bird Conservation Region 6 in Alberta based on the pixel-based (PIX) and Partners in Flight (PIF) estimators. |
| Eastern Canada: | future density projections of the distribution and abundance of breeding waterfowl in Eastern Canada. |