BirdAnalyst
BBS Route · Utah · BCR 16

Lost Cr. Res Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 106 species recorded across 22 survey years, still active.

106Species 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 →
22Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2018Span
3Observers

Bird Species Found on Utah Lost Cr. Res

Top 40 of 106 species by most recent count. Each links to its species trend.

Species recorded on the Lost Cr. Res 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
Green-tailed TowheePasserellidae562018-36%1997
American RobinTurdidae502018-47%1997
Cliff SwallowHirundinidae502015+783%2002
Brewer's SparrowPasserellidae342018+44%1997
MacGillivray's WarblerParulidae322018+15%1997
Yellow WarblerParulidae272018-57%1997
Chipping SparrowPasserellidae262018-7%1997
Northern House WrenTroglodytidae182018-24%1997
Song SparrowPasserellidae172018-26%1997
Mountain ChickadeeParidae162018+180%1997
Lazuli BuntingCardinalidae152018+92%1999
Black-billed MagpieCorvidae142018+32%1997
White-crowned SparrowPasserellidae142018+35%1997
Broad-tailed HummingbirdTrochilidae132018-54%1997
Dusky FlycatcherTyrannidae122018-73%1997
Western TanagerCardinalidae122018-9%1997
European StarlingSturnidae122003+50%1996
Brewer's BlackbirdIcteridae102018+143%2005
Warbling VireoVireonidae92018-86%1997
Common NighthawkCaprimulgidae72016+83%2007
Fox SparrowPasserellidae72015-50%1997
Tree SwallowHirundinidae72018-33%1997
Red-breasted NuthatchSittidae62018+100%1998
Ruby-crowned KingletRegulidae62018-62%1997
Mountain BluebirdTurdidae62018-74%1997
Gray FlycatcherTyrannidae62016n/an/a
Brown-headed CowbirdIcteridae52017-24%1997
Violet-green SwallowHirundinidae52016-31%1997
Black-capped ChickadeeParidae52018+200%1997
Sage ThrasherMimidae52016+60%2001
Red-naped SapsuckerPicidae42015+160%1998
Cassin's FinchFringillidae42016-44%1997
American GoldfinchFringillidae42015+117%1997
Mourning DoveColumbidae32016-35%1997
Red-tailed HawkAccipitridae32018+125%1997
American KestrelFalconidae32018+0%1997
Hammond's FlycatcherTyrannidae32016+10%1997
Pine SiskinFringillidae32016-88%1997
Spotted TowheePasserellidae32016+0%1997
Purple MartinHirundinidae32016-65%1997

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