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):  density estimates and population sizes for 143 landbird species using a generalized analytical approach (boosted regression tree models).
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.