Northern Prairie Wildlife Research Center
| Species | Study Areas in Canada | Study Areas in United Statesa | |||||||
| (N) | No. > or = common | % > or = common | (N) | No. > or = common | % > or = common | X2b,c | P | ||
| Carnivores | |||||||||
| Coyote | 16 | 16 | 100 | 17 | 8 | 47 | 11.65 | 0.001 | |
| Gray Wolf | 16 | 0 | 0 | 17 | 0 | 0 | 0.01 | 0.977 | |
| Red Fox | 16 | 11 | 69 | 17 | 17 | 100 | 6.26 | 0.012 | |
| Raccoon | 16 | 7 | 44 | 17 | 16 | 94 | 9.90 | 0.002 | |
| Striped Skunk | 16 | 15 | 94 | 17 | 17 | 100 | 1.10 | 0.295 | |
| Badger | 16 | 6 | 37 | 17 | 10 | 59 | 1.50 | 0.221 | |
| Mink | 16 | 0 | 0 | 9 | 5 | 56 | 11.11 | 0.001 | |
| Rodents | |||||||||
| Franklin's Ground Squirrel | 16 | 3 | 19 | 17 | 0 | 0 | 3.51 | 0.061 | |
| Corvids | |||||||||
| Black-billed Magpie | 16 | 6 | 37 | 17 | 0 | 0 | 7.79 | 0.005 | |
| American Crow | 16 | 15 | 94 | 17 | 0 | 0 | 29.22 | <0.001 | |
| Raven | 16 | 0 | 0 | 17 | 0 | 0 | 0.01 | 0.977 | |
| Raptors | |||||||||
| Northern Harrier | 16 | 7 | 44 | 9 | 1 | 11 | 2.82 | 0.093 | |
| Swainson's Hawk | 15d | 7 | 47 | 9 | 4 | 44 | 0.01 | 0.916 | |
| Red-tailed Hawk | 16 | 8 | 50 | 9 | 2 | 22 | 1.85 | 0.174 | |
| Ferruginous Hawk | 16 | 0 | 0 | 9 | 2 | 22 | 3.87 | 0.049 | |
| Great Horned Owl | 16 | 6 | 38 | 9 | 8 | 89 | 6.17 | 0.013 | |
aExcludes minks and raptors in eight Central Flyway study areas
because data were insufficient to determine whether abundance was common or
greater.
bChi-square value with 1 df.
cWe added 0.5 to all cells to accommodate zero counts.
dExcludes the Holden study area because data were insufficient to
determine whether species was common or more abundant.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/birds/predator/atab06.htm
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Page Last Modified: Friday, 01-Feb-2013 19:48:14 EST
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