Table 1.
A comparison of the most common species encountered through active collection of carcasses from collaborating organizations (active surveillance) and through transect observations (passive surveillance, broken down to indicate species differences between the most commonly seen living and dead animals)
| Common name | Species | Active surveillance (n = 265) | Passive surveillance (alive and dead) (n = 153) | Passive surveillance (dead) (n = 16) |
|---|---|---|---|---|
| Grey squirrel | Sciurus carolinensis | 26% | 0% | 0% |
| American robin | Turdus migratorius | 9% | 0% | 0% |
| Eastern cottontail | Sylvilagus floridanus | 8% | 0% | 6% |
| Black-tailed deer | Odocoileus hemionus | 6% | 0% | 6% |
| European starling | Sturnus vulgaris | 5% | 0% | 0% |
| Northern flicker | Colaptes auratus | 5% | 0% | 0% |
| Gull | Larus sp. | 5% | 8% | 12% |
| Raccoon | Procyon lotor | 4% | 0% | 0% |
| Pine Siskin | Carduelis pinus | 3% | 0% | 0% |
| Great blue heron | Ardea herodias | 2% | 7% | 50% |
| Northwestern crow | Corvus caurinus | 0% | 26% | 0% |
| Mallard duck | Anas platyrhynchos | 0% | 11% | 6% |
| Swallow | Tachycineta bicolor | 0% | 7% | 0% |
| Bushtit | Psaltriparus minimus | 0% | 3% | 0% |
| House sparrow | Passer domesticus | 0% | 3% | 0% |
| Harbour seal | Phoca vitulina | 0% | 0% | 19% |
| Unidentifiable | 0% | 0% | 16% |