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 | American Robin | 1 | 1 |
| 2 | Band-Tailed Pigeon | 18 | 36 |
| 3 | Black Bear | 44 | 44 |
| 4 | Black Phoebe | 3 | 3 |
| 5 | Black Rat | 3 | 3 |
| 6 | Black-Headed Grosbeak | 1 | 1 |
| 7 | Bobcat | 10 | 10 |
| 8 | Brewer's Blackbird | 6 | 6 |
| 9 | Brown-Headed Cowbird | 1 | 1 |
| 10 | Brush Rabbit | 11 | 11 |
| 11 | California Ground Squirrel | 18 | 18 |
| 12 | California Pocket Mouse | 4 | 4 |
| 13 | California Quail | 4 | 5 |
| 14 | Cedar Waxwing | 1 | 1 |
| 15 | Cooper's Hawk | 3 | 3 |
| 16 | Domestic Dog | 15 | 15 |
| 17 | Eastern Gray Squirrel | 4 | 4 |
| 18 | Golden-Crowned Sparrow | 2 | 2 |
| 19 | Gray Fox | 234 | 237 |
| 20 | House Finch | 47 | 83 |
| 21 | Human | 78 | 90 |
| 22 | Human Researcher | 8 | 8 |
| 23 | Lesser Goldfinch | 3 | 4 |
| 24 | Mountain Quail | 1 | 1 |
| 25 | Mourning Dove | 569 | 1,160 |
| 26 | Mule (or Black tailed) Deer | 3,177 | 4,601 |
| 27 | Northern Rough-Winged Swallow | 1 | 1 |
| 28 | Pine Siskin | 3 | 3 |
| 29 | Purple Finch | 1 | 1 |
| 30 | Raccoon | 40 | 40 |
| 31 | Red-Shouldered Hawk | 1 | 1 |
| 32 | Ringtail | 1 | 1 |
| 33 | Steller's Jay | 81 | 84 |
| 34 | Striped Skunk | 14 | 14 |
| 35 | Western Gray Squirrel | 27 | 27 |
| 36 | Western Scrub-Jay | 1 | 1 |