BirdAnalyst
BBS Route · Idaho · BCR 9

Squirrel Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 119 species recorded across 42 survey years, still active.

119Species 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 →
42Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1971–2024Span
7Observers

Bird Species Found on Idaho Squirrel

Top 40 of 119 species by most recent count. Each links to its species trend.

Species recorded on the Squirrel 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
Mourning DoveColumbidae302024-67%1973
Warbling VireoVireonidae292024-39%1973
Ruby-crowned KingletRegulidae282024+300%1973
American CrowCorvidae212024+46%1973
Northern House WrenTroglodytidae212024+47%1973
Western TanagerCardinalidae162024+10%1973
American RobinTurdidae152024-56%1973
Ring-billed GullLaridae122014n/an/a
Black-billed MagpieCorvidae112024-21%1973
European StarlingSturnidae92024-18%1973
Brewer's BlackbirdIcteridae92024-86%1973
American GoldfinchFringillidae92024+275%1973
Yellow WarblerParulidae92024-32%1973
Cliff SwallowHirundinidae82024+44%1977
Dusky FlycatcherTyrannidae72024-49%1973
Townsend's WarblerParulidae71994n/an/a
Wilson's PhalaropeScolopacidae71999n/an/a
Red-winged BlackbirdIcteridae62024-65%1973
Vesper SparrowPasserellidae62024-61%1973
American AvocetRecurvirostridae61998n/an/a
Horned LarkAlaudidae52024-83%1973
Swainson's HawkAccipitridae52024+33%1979
Mountain ChickadeeParidae42024-50%1973
Black-headed GrosbeakCardinalidae42024+60%1974
Townsend's SolitaireTurdidae42009+20%1988
Calliope HummingbirdTrochilidae42004+150%1990
Red-tailed HawkAccipitridae42024+20%1984
Clark's NutcrackerCorvidae42013+100%1993
Rock PigeonColumbidae32014-46%1974
Bullock's OrioleIcteridae32024+133%1978
Red CrossbillFringillidae32007-50%1978
Chipping SparrowPasserellidae32024-77%1973
Northern Rough-winged SwallowHirundinidae31991-61%1974
Swainson's ThrushTurdidae32023-40%1977
Brewer's SparrowPasserellidae32024-25%1974
Great Horned OwlStrigidae31994+100%1984
Grasshopper SparrowPasserellidae32024+75%2008
Sandhill CraneGruidae22022-25%1973
American KestrelFalconidae22024-47%1973
Red-naped SapsuckerPicidae22024+0%1973

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