BSOL Totals for 2001
| SPECIES | TOTALS | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC |
| Sharp-shinned Hawk | 10 | 2 | 1 | 1 | 6 | ||||||||
| Red-shouldered Hawk | 1 | 1 | |||||||||||
| California Quail | 50 | 2 | 4 | 19 | 11 | 5 | 9 | ||||||
| Mourning Dove | 1 | 1 | |||||||||||
| Northern Pygmy Owl | 1 | 1 | |||||||||||
| Black-chinned Hummingbird | 1 | 1 | |||||||||||
| Anna's Hummingbird | 64 | 4 | 1 | 3 | 5 | 21 | 14 | 4 | 2 | 4 | 4 | 2 | |
| Selaphorus Hummingbird | 2 | 2 | |||||||||||
| Allen's Hummingbird | 60 | 6 | 12 | 10 | 28 | 3 | 1 | ||||||
| Belted Kingfisher | 2 | 1 | 1 | ||||||||||
| Acorn Woodpecker | 1 | 1 | |||||||||||
| Nuttall's Woodpecker | 30 | 1 | 2 | 5 | 8 | 10 | 4 | ||||||
| Downy Woodpecker | 50 | 1 | 2 | 16 | 6 | 16 | 4 | 4 | 1 | ||||
| Hairy Woodpecker | 8 | 2 | 4 | 1 | 1 | ||||||||
| Flicker Intergrade | 2 | 2 | |||||||||||
| Red-shafted Flicker | 7 | 1 | 1 | 3 | 1 | 1 | |||||||
| Olive-sided Flycatcher | 7 | 1 | 3 | 2 | 1 | ||||||||
| Western-wood Pewee | 6 | 2 | 3 | 1 | |||||||||
| Willow Flycatcher | 7 | 2 | 1 | 3 | 1 | ||||||||
| Hammond's Flycatcher | 2 | 2 | |||||||||||
| Dusky Flycatcher | 1 | 1 | |||||||||||
| Pacific-slope Flycatcher | 197 | 3 | 10 | 5 | 11 | 34 | 114 | 20 | |||||
| Black Phoebe | 54 | 1 | 7 | 17 | 14 | 2 | 4 | 6 | 2 | 1 | |||
| Ash-throated Flycatcher | 18 | 3 | 3 | 12 | |||||||||
| Tree Swallow | 4 | 1 | 3 | ||||||||||
| Violet-green Swallow | 6 | 2 | 4 | ||||||||||
| Barn Swallow | 2 | 2 | |||||||||||
| Steller's Jay | 34 | 1 | 1 | 2 | 1 | 1 | 1 | 12 | 13 | 2 | |||
| Western Scrub Jay | 13 | 1 | 8 | 3 | 1 | ||||||||
| Chesnut-backed Chickadee | 393 | 7 | 4 | 16 | 7 | 100 | 103 | 65 | 29 | 29 | 12 | 16 | 5 |
| Oak Titmouse | 6 | 2 | 1 | 2 | 1 | ||||||||
| Bushtit | 138 | 1 | 6 | 2 | 6 | 6 | 24 | 30 | 19 | 12 | 12 | 20 | |
| White-breasted Nuthatch | 1 | 1 | |||||||||||
| Brown Creeper | 7 | 1 | 1 | 2 | 1 | 1 | 1 | ||||||
| Bewick's Wren | 152 | 5 | 4 | 7 | 3 | 5 | 8 | 22 | 39 | 35 | 22 | 2 | |
| House Wren | 54 | 4 | 9 | 19 | 15 | 4 | 1 | 2 | |||||
| Winter Wren | 4 | 1 | 1 | 1 | 1 | ||||||||
| Ruby-crowned Kinglet | 270 | 14 | 5 | 18 | 1 | 87 | 112 | 33 | |||||
| Blue-gray Gnatcatcher | 1 | 1 | |||||||||||
| Western Bluebird | 2 | 2 | |||||||||||
| Swainson's Thrush | 109 | 1 | 51 | 13 | 18 | 6 | 18 | 2 | |||||
| Hermit Thrush | 238 | 22 | 5 | 9 | 3 | 110 | 66 | 23 | |||||
| Varied Thrush | 5 | 5 | |||||||||||
| American Robin | 5 | 2 | 1 | 1 | 1 | ||||||||
| Wrentit | 195 | 6 | 3 | 6 | 3 | 19 | 55 | 33 | 23 | 6 | 14 | 19 | 8 |
| California Thrasher | 8 | 1 | 2 | 2 | 2 | 1 | |||||||
| Cedar Waxwing | 3 | 1 | 1 | 1 | |||||||||
| Cassin's Vireo | 7 | 2 | 4 | 1 | |||||||||
| Hutton's Vireo | 104 | 5 | 3 | 1 | 5 | 8 | 5 | 22 | 19 | 30 | 6 | ||
| Warbling Vireo | 211 | 1 | 6 | 25 | 3 | 43 | 71 | 56 | 6 | ||||
| Philadelphia Vireo | 1 | 1 | |||||||||||
| Red-eyed Vireo | 1 | 1 | |||||||||||
| Tennessee Warbler | 1 | 1 | |||||||||||
| Orange-crowned Warbler | 182 | 11 | 36 | 34 | 63 | 20 | 9 | 3 | 4 | 1 | 1 | ||
| Nashville Warbler | 5 | 5 | |||||||||||
| Western Palm Warbler | 1 | 1 | |||||||||||
| Yellow Warbler | 155 | 11 | 2 | 50 | 73 | 19 | |||||||
| Chesnut-sided Warbler | 1 | 1 | |||||||||||
| Magnolia Warbler | 1 | 1 | |||||||||||
| Yellow-rumped Warbler | 414 | 46 | 14 | 41 | 74 | 1 | 30 | 178 | 30 | ||||
| Black-throated Gray Warbler | 1 | 1 | |||||||||||
| Townsend's Warbler | 29 | 1 | 3 | 15 | 9 | 1 | |||||||
| Hermit Warbler | 7 | 6 | 1 | ||||||||||
| Black and white Warbler | 2 | 2 | |||||||||||
| American Redstart | 1 | 1 | |||||||||||
| Ovenbird | 1 | 1 | |||||||||||
| Northern Waterthrush | 2 | 1 | 1 | ||||||||||
| Worm-eating Warbler | 2 | 2 | |||||||||||
| MacGillivray's Warbler | 12 | 1 | 1 | 4 | 1 | 5 | |||||||
| Common Yellowthroat | 52 | 2 | 22 | 14 | 5 | 3 | 3 | 3 | |||||
| Hooded Warbler | 6 | 1 | 5 | ||||||||||
| Wilson's Warbler | 657 | 22 | 95 | 61 | 152 | 157 | 128 | 40 | 2 | ||||
| Yellow-breasted Chat | 26 | 22 | 1 | 2 | 1 | ||||||||
| Western Tanager | 1 | 1 | |||||||||||
| Rose-breasted Grosbeak | 6 | 3 | 1 | 2 | |||||||||
| Black-headed Grosbeak | 64 | 2 | 17 | 12 | 21 | 9 | 3 | ||||||
| Lazuli Bunting | 6 | 2 | 1 | 3 | |||||||||
| Indigo Bunting | 1 | 1 | |||||||||||
| Painted Bunting | 1 | 1 | |||||||||||
| Spotted Towhee | 111 | 2 | 1 | 9 | 9 | 8 | 8 | 10 | 8 | 17 | 19 | 14 | 6 |
| California Towhee | 41 | 1 | 2 | 2 | 2 | 3 | 12 | 12 | 3 | 4 | |||
| Chipping Sparrow | 1 | 1 | |||||||||||
| Fox Sparrow | 39 | 4 | 6 | 1 | 4 | 13 | 5 | 6 | |||||
| Song Sparrow | 522 | 3 | 4 | 17 | 10 | 87 | 153 | 88 | 80 | 37 | 25 | 17 | 1 |
| Lincoln's Sparrow | 85 | 1 | 2 | 34 | 2 | 24 | 21 | 1 | |||||
| American Tree Sparrow | 1 | 1 | |||||||||||
| Swamp Sparrow | 1 | 1 | |||||||||||
| Golden-crowned Sparrow | 176 | 6 | 2 | 19 | 8 | 10 | 63 | 64 | 4 | ||||
| White-crowned Sparrow | 56 | 2 | 4 | 1 | 3 | 1 | 16 | 22 | 7 | ||||
| White-throated Sparrow | 1 | 1 | |||||||||||
| Oregon Junco | 46 | 1 | 9 | 10 | 16 | 1 | 1 | 6 | 2 | ||||
| Purple Finch | 205 | 9 | 6 | 5 | 24 | 75 | 62 | 6 | 1 | 3 | 10 | 4 | |
| House Finch | 8 | 3 | 2 | 3 | |||||||||
| Pine Siskin | 14 | 3 | 8 | 2 | 1 | ||||||||
| Lesser Goldfinch | 14 | 1 | 7 | 3 | 3 | ||||||||
| Lawrence's Goldfinch | 2 | 2 | |||||||||||
| American Goldfinch | 10 | 2 | 1 | 5 | 2 | ||||||||
| SPECIES | TOTALS | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC |
| Totals | 5526 | 144 | 45 | 220 | 375 | 598 | 833 | 706 | 589 | 605 | 608 | 639 | 164 |
| Number of Species | 97 | 19 | 12 | 31 | 37 | 46 | 42 | 44 | 42 | 49 | 43 | 37 | 22 |
| Days of Operation | 218 | 10 | 6 | 10 | 14 | 24 | 23 | 26 | 27 | 26 | 24 | 20 | 8 |