BirdAnalyst
BBS Route · Utah · BCR 16

Alton 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 50 species recorded across 5 survey years, still active.

50Species 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 →
5Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2021–2025Span
1Observers

Bird Species Found on Utah Alton 2

Top 40 of 50 species by most recent count. Each links to its species trend.

Species recorded on the Alton 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
MallardAnatidae742025+722%2023
Black-throated SparrowPasserellidae312025+68%2022
Barn SwallowHirundinidae292025+900%2022
Canada GooseAnatidae242024+145%2022
Brewer's BlackbirdIcteridae242025+373%2022
American RobinTurdidae162025+71%2022
Chipping SparrowPasserellidae152025+11%2022
Warbling VireoVireonidae142025+94%2022
Western TanagerCardinalidae122025+200%2022
Hairy WoodpeckerPicidae112025+183%2022
Ash-throated FlycatcherTyrannidae102025+73%2022
Yellow WarblerParulidae102025+867%2022
Mourning DoveColumbidae102024+67%2022
Turkey VultureCathartidae82025+125%2022
Common RavenCorvidae82025+57%2022
Plumbeous VireoVireonidae82025+129%2022
House FinchFringillidae82025+300%2022
Western MeadowlarkIcteridae82025+167%2023
Spotted TowheePasserellidae72025+500%2022
Broad-tailed HummingbirdTrochilidae62025+250%2023
Mountain ChickadeeParidae62025+0%2022
Pinyon JayCorvidae62025-50%2023
KilldeerCharadriidae62025n/an/a
Western Wood-PeweeTyrannidae52025+150%2023
Steller's JayCorvidae42025-79%2021
Red-winged BlackbirdIcteridae42025-65%2023
American CootRallidae32025-85%2021
Violet-green SwallowHirundinidae32025-40%2021
Great Blue HeronArdeidae32025+50%2022
Wild TurkeyPhasianidae32025+200%2023
Pine SiskinFringillidae32025+200%2023
Eurasian Collared-DoveColumbidae32025n/an/a
Black-chinned HummingbirdTrochilidae22025+150%2023
Blue-gray GnatcatcherPolioptilidae22025-87%2022
Hermit ThrushTurdidae22023-86%2021
Bald EagleAccipitridae22022n/an/a
Ring-necked DuckAnatidae22023n/an/a
Ruby-crowned KingletRegulidae22024-33%2023
Dusky GrousePhasianidae12024+0%2021
American KestrelFalconidae12021n/an/a

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