BBS Route · Utah · BCR 16
Boulder Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 112 species recorded across 39 survey years, still active.
112Species Recorded
39Years Surveyed
1968–2021Span
7Observers
Bird Species Found on Utah Boulder
Top 40 of 112 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Violet-green Swallow | Hirundinidae | 34 | 2021 | -10% | 1986 | |
| Cliff Swallow | Hirundinidae | 26 | 2021 | +4% | 1971 | |
| White-throated Swift | Apodidae | 10 | 2018 | -4% | 1987 | |
| House Finch | Fringillidae | 10 | 2019 | +21% | 1987 | |
| Pinyon Jay | Corvidae | 9 | 2021 | -56% | 1971 | |
| Ash-throated Flycatcher | Tyrannidae | 9 | 2021 | -30% | 1987 | |
| Tree Swallow | Hirundinidae | 7 | 2002 | +210% | 1994 | |
| Plumbeous Vireo | Vireonidae | 6 | 2019 | -28% | 1988 | |
| Brewer's Blackbird | Icteridae | 5 | 2021 | -87% | 1974 | |
| Black-billed Magpie | Corvidae | 4 | 2019 | +33% | 1974 | |
| Western Wood-Pewee | Tyrannidae | 4 | 2018 | +29% | 1989 | |
| Blue-gray Gnatcatcher | Polioptilidae | 4 | 2019 | -52% | 1990 | |
| Sagebrush Sparrow | Passerellidae | 4 | 2003 | -25% | 1993 | |
| Rock Pigeon | Columbidae | 4 | 1993 | n/a | n/a | |
| Western Meadowlark | Icteridae | 3 | 2021 | +25% | 1971 | |
| American Robin | Turdidae | 3 | 2021 | +33% | 1971 | |
| Turkey Vulture | Cathartidae | 3 | 2021 | +100% | 1989 | |
| Common Raven | Corvidae | 3 | 2021 | +52% | 1986 | |
| Cinnamon Teal | Anatidae | 3 | 2011 | +200% | 1971 | |
| House Sparrow | Passeridae | 3 | 2019 | -54% | 2004 | |
| Rock Wren | Troglodytidae | 3 | 2019 | -58% | 1987 | |
| Spotted Towhee | Passerellidae | 3 | 2021 | -50% | 1989 | |
| Northern Rough-winged Swallow | Hirundinidae | 3 | 2012 | -25% | 1990 | |
| Bewick's Wren | Troglodytidae | 3 | 2018 | -36% | 2006 | |
| Pine Siskin | Fringillidae | 3 | 2019 | +200% | 1989 | |
| Gambel's Quail | Odontophoridae | 3 | 1990 | n/a | n/a | |
| Western Bluebird | Turdidae | 3 | 2019 | +29% | 1995 | |
| Common Grackle | Icteridae | 3 | 2014 | +50% | 2004 | |
| Mourning Dove | Columbidae | 2 | 2021 | +14% | 1971 | |
| Song Sparrow | Passerellidae | 2 | 2004 | -33% | 1986 | |
| Mountain Bluebird | Turdidae | 2 | 2019 | +120% | 1986 | |
| Red-winged Blackbird | Icteridae | 2 | 2021 | -52% | 1974 | |
| Lark Sparrow | Passerellidae | 2 | 2019 | -10% | 1988 | |
| Gray Vireo | Vireonidae | 2 | 2018 | +43% | 1993 | |
| Yellow Warbler | Parulidae | 2 | 2021 | +50% | 1989 | |
| Black-throated Gray Warbler | Parulidae | 2 | 2021 | -67% | 1987 | |
| Woodhouse's Scrub-Jay | Corvidae | 2 | 2021 | -85% | 1988 | |
| Townsend's Solitaire | Turdidae | 2 | 2008 | -33% | 1987 | |
| American Coot | Rallidae | 2 | 2021 | -17% | 1992 | |
| Dusky Flycatcher | Tyrannidae | 2 | 2019 | -33% | 1990 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.