Wildlife Observer Network
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Three months of still photos at wildlife crossing structure under California highway 50. This structure was built by Caltrans, District 3, to allow wildlife to safely pass under the highway. Thousands of animals have passed through the structure, reducing conflict with vehicles on the highway above.
This is a summary of animal observation across all locations and positions.
| Animal | Image Count | Animal Count | |
|---|---|---|---|
| 1 | Western Scrub-Jay | 1 | 1 |
| 2 | Black-Headed Grosbeak | 1 | 1 |
| 3 | Ringtail | 1 | 1 |
| 4 | American Robin | 1 | 1 |
| 5 | Mountain Quail | 1 | 1 |
| 6 | Cedar Waxwing | 1 | 1 |
| 7 | Purple Finch | 1 | 1 |
| 8 | Northern Rough-Winged Swallow | 1 | 1 |
| 9 | Red-Shouldered Hawk | 1 | 1 |
| 10 | Brown-Headed Cowbird | 1 | 1 |
| 11 | Golden-Crowned Sparrow | 2 | 2 |
| 12 | Black Phoebe | 3 | 3 |
| 13 | Cooper's Hawk | 3 | 3 |
| 14 | Black Rat | 3 | 3 |
| 15 | Pine Siskin | 3 | 3 |
| 16 | Lesser Goldfinch | 3 | 4 |
| 17 | California Pocket Mouse | 4 | 4 |
| 18 | Eastern Gray Squirrel | 4 | 4 |
| 19 | California Quail | 4 | 5 |
| 20 | Brewer's Blackbird | 6 | 6 |
| 21 | Human Researcher | 8 | 8 |
| 22 | Bobcat | 10 | 10 |
| 23 | Brush Rabbit | 11 | 11 |
| 24 | Striped Skunk | 14 | 14 |
| 25 | Domestic Dog | 15 | 15 |
| 26 | California Ground Squirrel | 18 | 18 |
| 27 | Band-Tailed Pigeon | 18 | 36 |
| 28 | Western Gray Squirrel | 27 | 27 |
| 29 | Raccoon | 40 | 40 |
| 30 | Black Bear | 44 | 44 |
| 31 | House Finch | 47 | 83 |
| 32 | Human | 78 | 90 |
| 33 | Steller's Jay | 81 | 84 |
| 34 | Gray Fox | 234 | 237 |
| 35 | Mourning Dove | 569 | 1,160 |
| 36 | Mule (or Black tailed) Deer | 3,177 | 4,601 |