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BBS Route · Utah · BCR 10

Randolph Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 137 species recorded across 32 survey years, still active.

137Species 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 →
32Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1992–2025Span
4Observers

Bird Species Found on Utah Randolph

Top 40 of 137 species by most recent count. Each links to its species trend.

Species recorded on the Randolph 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
Red-winged BlackbirdIcteridae812025+141%1994
Yellow-headed BlackbirdIcteridae392025-57%1994
Western MeadowlarkIcteridae262025+16%1994
American RobinTurdidae232025-28%1994
Sandhill CraneGruidae222025+631%1994
Brewer's BlackbirdIcteridae222025+43%1994
Cliff SwallowHirundinidae212025-73%1994
Brown-headed CowbirdIcteridae192025-8%1994
Mourning DoveColumbidae162025+41%1994
Green-tailed TowheePasserellidae162025-10%1994
Violet-green SwallowHirundinidae162024+238%1994
California GullLaridae152025-67%1994
Wilson's SnipeScolopacidae142025-40%1994
Ring-billed GullLaridae132024+733%2005
Canada GooseAnatidae122025+989%1994
White-faced IbisThreskiornithidae122022-46%1995
Brewer's SparrowPasserellidae122025-26%1994
Wilson's PhalaropeScolopacidae112025-59%1994
Black-billed MagpieCorvidae92025+400%1994
Long-billed CurlewScolopacidae92024+667%2001
Sage ThrasherMimidae82025+41%1994
American WigeonAnatidae82021+300%2009
MallardAnatidae72025+7%1994
WilletScolopacidae62025-56%1994
Dusky FlycatcherTyrannidae62025+13%1994
Vesper SparrowPasserellidae62025+33%1994
Savannah SparrowPasserellidae62025-20%1994
Northern House WrenTroglodytidae62025+21%1994
Gray FlycatcherTyrannidae62025+275%2004
Eurasian Collared-DoveColumbidae62024+450%2007
KilldeerCharadriidae52025-28%1994
Turkey VultureCathartidae52023-24%1995
Greater Sage-GrousePhasianidae52013+50%2007
Eastern KingbirdTyrannidae42024+33%1994
Western KingbirdTyrannidae42025+157%1995
Common RavenCorvidae42025+111%1999
Yellow WarblerParulidae42025-42%1994
Great Blue HeronArdeidae42022+100%1998
Great Horned OwlStrigidae42024+167%2004
House FinchFringillidae42024-43%1996

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.