COGR
Common Grackle
Quiscale bronzé · Quiscalus quiscula · Family Icteridae
Density map of Common Grackle (average density, males/ha) Show detections
Land cover associations
Density (males/ha) across Canada and in Bird Conservation Regions within Canada (see Methods)
Population size
Population size (million males) is based on summing up predictive maps by regions (intervals in parentheses reflect the 5th and 95th percentile of the bootstrap distribution; see Methods)| Region | Abundance (M males) | Density (males/ha) | Area (M km2) |
|---|---|---|---|
| Canada | 22.7 (21.4 — 23.5) | 0.0366 (0.0344 — 0.0379) | 6.21 |
| 4 Northwestern Interior Forest | 0.0239 (0.0084 — 0.0463) | 0.0004 (0.0002 — 0.0008) | 0.546 |
| 5 Northern Pacific Rainforest | 0.0003 (0 — 0.0017) | 0 (0 — 0.0001) | 0.136 |
| 6 Boreal Taiga Plains | 1.54 (1.36 — 1.86) | 0.013 (0.0115 — 0.0157) | 1.18 |
| 7 Taiga Shield & Hudson Plains | 0.681 (0.401 — 0.877) | 0.0046 (0.0027 — 0.0059) | 1.49 |
| 8 Boreal Softwood Shield | 3.99 (3.42 — 4.58) | 0.0303 (0.026 — 0.0348) | 1.32 |
| 9 Great Basin | 0.0002 (0 — 0.0013) | 0 (0 — 0.0002) | 0.0552 |
| 10 Northern Rockies | 0.0812 (0.0554 — 0.111) | 0.0022 (0.0015 — 0.003) | 0.372 |
| 11 Prairie Potholes | 1.89 (1.71 — 2.12) | 0.0425 (0.0386 — 0.0478) | 0.444 |
| 12 Boreal Hardwood Transition | 6.02 (5.47 — 6.44) | 0.161 (0.147 — 0.173) | 0.373 |
| 13 Lower Great Lakes/St. Lawrence Plain | 4.95 (4.43 — 5.35) | 0.486 (0.435 — 0.525) | 0.102 |
| 14 Atlantic Northern Forest | 3.5 (3.36 — 3.65) | 0.179 (0.172 — 0.187) | 0.195 |
| 6-0 Boreal Taiga Plains, South | 1.51 (1.34 — 1.81) | 0.02 (0.0177 — 0.024) | 0.756 |
| 6-1 Boreal Taiga Plains, North | 0.0378 (0.0164 — 0.0504) | 0.0009 (0.0004 — 0.0012) | 0.428 |
| 7-0 Taiga Shield & Hudson Plains, West | 0.17 (0.084 — 0.251) | 0.003 (0.0015 — 0.0045) | 0.561 |
| 7-1 Taiga Shield & Hudson Plains, East | 0.486 (0.286 — 0.711) | 0.0052 (0.0031 — 0.0077) | 0.925 |
| 8-0 Boreal Softwood Shield, West | 0.682 (0.543 — 0.774) | 0.0196 (0.0156 — 0.0222) | 0.348 |
| 8-1 Boreal Softwood Shield, Ontario | 1.35 (1.01 — 1.6) | 0.0342 (0.0255 — 0.0406) | 0.395 |
| 8-2 Boreal Softwood Shield, East | 1.86 (1.65 — 2.2) | 0.0393 (0.0348 — 0.0465) | 0.473 |
| 8-3 Boreal Softwood Shield, Newfoundland | 0.0634 (0.02 — 0.104) | 0.0067 (0.0021 — 0.011) | 0.0945 |
Data accessibility
- Download average density raster layers in GeoTIFF format.
- Download results in Excel (xlsx) format. Sheets contain abundance and density estimates and also the list of species, variables, variable importance and validation metrics.
- Access the population size and density estimates via the JSON API.