BirdAnalyst
BBS Route · Utah · BCR 16

Gilson Butte 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 23 species recorded across 7 survey years, still active.

23Species 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 →
7Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2006–2018Span
2Observers

Bird Species Found on Utah Gilson Butte 2

Top 23 of 23 species by most recent count. Each links to its species trend.

Species recorded on the Gilson Butte 2 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
Horned LarkAlaudidae182018-32%2011
Brewer's SparrowPasserellidae132016+164%2010
Sagebrush SparrowPasserellidae102018-26%2011
Black-throated SparrowPasserellidae62018-5%2011
Loggerhead ShrikeLaniidae52018+80%2011
Northern HarrierAccipitridae32011+200%2006
Burrowing OwlStrigidae32017+33%2011
Ash-throated FlycatcherTyrannidae32012-40%2006
Say's PhoebeTyrannidae22018+80%2011
Common RavenCorvidae22017-53%2011
Violet-green SwallowHirundinidae22018-50%2011
Northern MockingbirdMimidae22018-33%2012
House FinchFringillidae22016+100%2012
Golden EagleAccipitridae22018n/an/a
Mourning DoveColumbidae12016-57%2010
Prairie FalconFalconidae12016-50%2006
Lark SparrowPasserellidae12017-25%2011
Rock WrenTroglodytidae12018-56%2011
American RobinTurdidae12010n/an/a
White-throated SwiftApodidae12018-67%2012
Cliff SwallowHirundinidae12012-86%2011
Sage ThrasherMimidae12017-50%2012
Canyon WrenTroglodytidae12016n/an/a

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