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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 Acorn Woodpecker 4 4
2 Allen's Chipmunk 53 54
3 American Crow 84 105
4 American Marten 223 244
5 American Robin 29 31
6 Band-Tailed Pigeon 117 188
7 Black Bear 137 137
8 Black Phoebe 15 15
9 Black Rat Rattus sp. 3 3
10 Black-Tailed Jackrabbit 236 244
11 Blue Jay 2 2
12 Bobcat 331 335
13 Brewer's Blackbird 4 4
14 Brush Rabbit 221 221
15 California Ground Squirrel 307 316
16 California Pocket Mouse 4 4
17 California Quail 6 12
18 California Thrasher 6 6
19 California Towhee 6 6
20 Cow 11 19
21 Coyote 294 299
22 Dark-Eyed Junco 3 3
23 Desert Cottontail 147 152
24 Domestic Dog 7 8
25 Douglas' Squirrel 14 14
26 Eastern Fox Squirrel 57 57
27 Eastern Gray Squirrel 54 54
28 European Starling 3 4
29 Golden-Mantled Ground Squirrel 2 2
30 Granite Spiny Lizard 2 2
31 Gray Fox 634 635
32 Great Horned Owl 1 1
33 Hermit Thrush 8 8
34 Human 2,876 3,437
35 Human Researcher 876 1,160
36 Long-Tailed Weasel 2 2
37 Mountain Cottontail 75 75
38 Mountain Lion 76 86
39 Mourning Dove 4 4
40 Mule (or Black tailed) Deer 969 1,096
41 Northern River Otter 1 1
42 Raccoon 99 119
43 Red-Tailed Hawk 1 1
44 Steller's Jay Bird 7 7
45 Steller's Jay 22 24
46 Striped Skunk 52 52
47 Turkey Vulture 46 46
48 Virginia Opossum 128 128
49 Western Fence Lizard 1 1
50 Western Gray Squirrel 31 35
51 Western Scrub-Jay Bird 1 1
52 Western Scrub-Jay 14 14
53 Western Spotted Skunk 3 3
54 Western Toad 1 1
55 White-Tailed Jackrabbit 2 2
56 Wild Turkey 255 625
57 Yellow-Bellied Marmot 25 25
58 Yellow-Pine Chipmunk 1 1
59 Yellow-Rumped Warbler 4 4