Table 3. Median annual estimates of human-related mortality in Canada across the five major species groups, based on a stochastic model that converted stage-specific mortality to potential adult breeders, ranked in descending order according to total estimated mortality across all bird groups. Note that species-group totals do not sum exactly to the Ďall birdsí value because uncertainty in species composition was explicitly modeled and the ďall birdsĒ value was modeled independently of each species groupís total. See text and Appendix 2 for details of the stochastic model conversions. In cases where mortality was not fully extrapolated to all regions and taxa, e.g., where it was only estimated for a given region or set of focal species, the taxonomic or regional scope of the estimate is indicated; impacts estimated Canada-wide and across taxa are indicated as Ďallí in the Scope column.

SOURCE SCOPE LANDBIRDS SEABIRDS SHOREBIRDS WATERBIRDS WATERFOWL ALL BIRDS
Cats - Feral All 78,600,000 293,400 380,500 79,600,000
Cats - Domestic All 54,150,000 199,300 258,300 54,880,000
Power - Transmission line collisions All 574,700 2,548,000 5,170,000 8,459,000 16,810,000
Buildings - Houses All 16,390,000 16,390,000
Transportation - Road vehicle collisions All 8,743,000 197,000 187,200 218,500 9,814,000
Agriculture - Pesticides All 1,898,000 19,230 19,430 19,130 1,998,000
Harvest - Migratory game birds All 235 55,520 24,770 8773 1,691,000 1,786,000
Buildings - Low- and mid-rise All 1,132,000 26,310 23,870 32,190 1,283,000
Harvest - Non-migratory game birds All 1,031,000 1,031,000
Forestry - Commercial Landbirds 887,835 887,835
Transportation - Chronic ship-source oil All 282,700 282,700
Power - Electrocutions All 178,200 1715 1854 2275 184,300
Agriculture – Haying and mowing 5 species 135,400 135,400
Power - Line maintenance All 70,140 4474 33,030 116,000
Communication - Tower collisions All 101,500 965 1050 1278 101,500
Power - Hydro reservoirs Québec 31,260 490 1571 158 35,770
Buildings - Tall All 32,000 388 339 501 34,130
Fisheries - Marine gill nets All 19,790 19,790
Power - Wind energy All 13,060 13,060
Oil and Gas - Well sites Landbirds 9815 9815
Mining - Pits and quarries All 5169 39 168 5637
Oil and Gas - Pipelines Landbirds 4687 4687
Mining - Metals and minerals All 2798 2798
Oil and Gas - Oil sands Landbirds 2193 2193
Oil and Gas - Seismic exploration Landbirds 1966 1966
Fisheries - Marine longlines and trawls All 1843 1843
Transportation - Road maintenance 6 species 1103 71 324 1545
Oil and Gas - Marine All   584       584
TOTAL 163,980,226 360,437 2,848,252 5,931,455 11,124,386 186,429,553