BBS Route · Nevada · BCR 9
Willis Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 89 species recorded across 21 survey years, still active.
89Species Recorded
21Years Surveyed
1988–2024Span
3Observers
Bird Species Found on Nevada Willis
Top 40 of 89 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Horned Lark | Alaudidae | 45 | 2024 | +119% | 1995 | |
| Black-throated Sparrow | Passerellidae | 37 | 2024 | -54% | 1995 | |
| Sagebrush Sparrow | Passerellidae | 36 | 2024 | -32% | 1995 | |
| American Robin | Turdidae | 25 | 2024 | +54% | 1995 | |
| Brewer's Blackbird | Icteridae | 17 | 2024 | -11% | 1995 | |
| Spotted Towhee | Passerellidae | 17 | 2024 | -31% | 1995 | |
| Pinyon Jay | Corvidae | 16 | 2024 | -86% | 1995 | |
| Brewer's Sparrow | Passerellidae | 13 | 2024 | -28% | 1995 | |
| Northern Mockingbird | Mimidae | 12 | 2024 | -44% | 1995 | |
| Common Raven | Corvidae | 10 | 2024 | -20% | 1995 | |
| Western Meadowlark | Icteridae | 10 | 2024 | -57% | 1995 | |
| Yellow Warbler | Parulidae | 8 | 2024 | +36% | 1995 | |
| Bullock's Oriole | Icteridae | 7 | 2024 | +113% | 1995 | |
| Lazuli Bunting | Cardinalidae | 7 | 2024 | -50% | 1995 | |
| Brown-headed Cowbird | Icteridae | 6 | 2024 | -13% | 1995 | |
| Lesser Goldfinch | Fringillidae | 6 | 2019 | +300% | 1995 | |
| Lark Sparrow | Passerellidae | 6 | 2024 | +35% | 1996 | |
| Western Kingbird | Tyrannidae | 5 | 2024 | -33% | 1995 | |
| Yellow-breasted Chat | Icteriidae | 5 | 2024 | -74% | 1995 | |
| Sage Thrasher | Mimidae | 5 | 2024 | -74% | 1995 | |
| California Quail | Odontophoridae | 5 | 1995 | +400% | 1994 | |
| Green-tailed Towhee | Passerellidae | 5 | 2024 | +133% | 1996 | |
| Gambel's Quail | Odontophoridae | 5 | 2003 | +50% | 2000 | |
| Bushtit | Aegithalidae | 5 | 2024 | +117% | 1998 | |
| Chukar | Phasianidae | 5 | 2024 | +17% | 2007 | |
| Mourning Dove | Columbidae | 4 | 2024 | -78% | 1995 | |
| Broad-tailed Hummingbird | Trochilidae | 4 | 2024 | -26% | 1995 | |
| Western Wood-Pewee | Tyrannidae | 4 | 2021 | +75% | 1995 | |
| Western Tanager | Cardinalidae | 4 | 2024 | +5% | 1996 | |
| Blue-gray Gnatcatcher | Polioptilidae | 4 | 2024 | +183% | 1997 | |
| Violet-green Swallow | Hirundinidae | 4 | 1998 | -90% | 1995 | |
| House Finch | Fringillidae | 3 | 2019 | -36% | 1996 | |
| Chipping Sparrow | Passerellidae | 3 | 2024 | -17% | 1995 | |
| European Starling | Sturnidae | 3 | 2019 | +9% | 1996 | |
| Black-throated Gray Warbler | Parulidae | 3 | 2024 | -33% | 1999 | |
| Great-tailed Grackle | Icteridae | 3 | 2024 | n/a | n/a | |
| Dusky Flycatcher | Tyrannidae | 2 | 2021 | +33% | 1999 | |
| Song Sparrow | Passerellidae | 2 | 2024 | -69% | 1995 | |
| Loggerhead Shrike | Laniidae | 2 | 2021 | +14% | 1996 | |
| Mountain Chickadee | Paridae | 2 | 2019 | +0% | 1995 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.