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Noise and Light Pollution

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Artificial noise and light can disturb natural wildlife behavior and potentially reduce wildlife use of crossing structures built to facilitate their crossing over and under state highways and interstates. In this study, we examine the role of artificial noise and light from traffic in wildlife species presence, activity, and willingness to use crossing structures.This research is intended to inform design and construction of crossing structures to enhance wildlife connectivity.
Project Date: 
Tuesday, September 4, 2018
Project Status: 

Artificial noise and light can disturb natural wildlife behavior and potentially reduce wildlife use of crossing structures built to facilitate their crossing over and under state highways and interstates. In this study, we examine the role of artificial noise and light from traffic in wildlife species presence, activity, and willingness to use crossing structures.This research is intended to inform design and construction of crossing structures to enhance wildlife connectivity. 

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Observation Summary

This is a summary of animal observation across all locations and positions.

Animal Animal Write-in Image Count Animal Count
1 Western Toad 1 1
2 Western Scrub-Jay Bird 1 1
3 Western Scrub-Jay 14 14
4 Great Horned Owl 1 1
5 Red-Tailed Hawk 1 1
6 California Quail 6 12
7 Turkey Vulture 46 46
8 Hermit Thrush 8 8
9 American Crow 84 105
10 Steller's Jay Bird 7 7
11 Steller's Jay 22 24
12 Yellow-Rumped Warbler 4 4
13 Brewer's Blackbird 4 4
14 Dark-Eyed Junco 3 3
15 Acorn Woodpecker 4 4
16 Wild Turkey 255 625
17 Band-Tailed Pigeon 117 188
18 California Towhee 6 6
19 Black Phoebe 15 15
20 European Starling 3 4
21 California Thrasher 6 6
22 American Robin 29 31
23 Mourning Dove 4 4
24 Coyote 294 299
25 California Pocket Mouse 4 4
26 Virginia Opossum 128 128
27 Black-Tailed Jackrabbit 236 244
28 White-Tailed Jackrabbit 2 2
29 Northern River Otter 1 1
30 Bobcat 331 335
31 Yellow-Bellied Marmot 25 25
32 American Marten 223 244
33 Striped Skunk 53 53
34 Long-Tailed Weasel 2 2
35 Mule (or Black tailed) Deer 1,081 1,208
36 Raccoon 99 119
37 Mountain Lion 76 86
38 Black Rat Rattus sp. 3 3
39 Eastern Gray Squirrel 54 54
40 Western Gray Squirrel 31 35
41 Eastern Fox Squirrel 57 57
42 California Ground Squirrel 307 316
43 Golden-Mantled Ground Squirrel 2 2
44 Western Spotted Skunk 3 3
45 Desert Cottontail 147 152
46 Brush Rabbit 221 221
47 Mountain Cottontail 75 75
48 Yellow-Pine Chipmunk 1 1
49 Allen's Chipmunk 53 54
50 Douglas' Squirrel 14 14
51 Gray Fox 634 635
52 Black Bear 137 137
53 Western Fence Lizard 1 1
54 Granite Spiny Lizard 2 2
55 Blue Jay 2 2
56 Human 2,881 3,442
57 Human Researcher 876 1,160
58 Domestic Dog 8 9
59 Cow 11 19