BirdAnalyst
BBS Route · Utah · BCR 16

Bonanza Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 21 survey years, still active.

77Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
21Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1992–2015Span
5Observers

Bird Species Found on Utah Bonanza

Top 40 of 77 species by most recent count. Each links to its species trend.

Species recorded on the Bonanza route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Rock WrenTroglodytidae802015+87%1995
Woodhouse's Scrub-JayCorvidae422013+475%1998
Spotted TowheePasserellidae262015-14%1995
Western MeadowlarkIcteridae222015+50%1995
Chipping SparrowPasserellidae162015+140%1996
Sagebrush SparrowPasserellidae142014-28%1995
Cliff SwallowHirundinidae142015-51%1996
Common RavenCorvidae132015+11%1998
Mourning DoveColumbidae102015-40%1995
Say's PhoebeTyrannidae92015-35%1995
Sage ThrasherMimidae82015-22%1995
ChukarPhasianidae72006+600%2002
Pinyon JayCorvidae62012-86%1995
Blue-gray GnatcatcherPolioptilidae62015-4%1995
Lark SparrowPasserellidae62015+30%1996
Brown-headed CowbirdIcteridae52008-20%1999
Turkey VultureCathartidae52010+400%1998
Green-tailed TowheePasserellidae52008-46%2005
American KestrelFalconidae42015+80%1995
Brewer's SparrowPasserellidae42014-81%1995
Black-throated SparrowPasserellidae42015+83%1998
Song SparrowPasserellidae42015+29%1998
Cassin's FinchFringillidae42005+11%1999
European StarlingSturnidae42011-18%1999
Broad-tailed HummingbirdTrochilidae32015+200%2003
Bewick's WrenTroglodytidae31992n/an/a
American RobinTurdidae32015+100%1998
Mountain BluebirdTurdidae32014-20%1995
Rock PigeonColumbidae31993n/an/a
Prairie FalconFalconidae32013+200%1995
Black-billed MagpieCorvidae22015+50%1996
Steller's JayCorvidae21992n/an/a
House FinchFringillidae22012-81%1999
Barn SwallowHirundinidae21992n/an/a
Juniper TitmouseParidae22013+33%1996
Vesper SparrowPasserellidae21998-33%1993
Plumbeous VireoVireonidae22006-40%1998
Black-throated Gray WarblerParulidae22014-14%2000
Golden EagleAccipitridae22012+33%2005
White-throated SwiftApodidae22005+0%1997

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.