BirdAnalyst
BBS Route · Oregon · BCR 10

Troy Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 113 species recorded across 31 survey years, still active.

113Species 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 →
31Years 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
1Observers

Bird Species Found on Oregon Troy

Top 40 of 113 species by most recent count. Each links to its species trend.

Species recorded on the Troy 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
Western TanagerCardinalidae302025+222%1994
Chipping SparrowPasserellidae222025-31%1994
American RobinTurdidae222025-15%1994
American White PelicanPelecanidae202025n/an/a
Western Wood-PeweeTyrannidae162025+112%1994
Yellow WarblerParulidae162025+54%1994
Red-breasted NuthatchSittidae152025-53%1994
Dusky FlycatcherTyrannidae132025+150%1994
Spotted TowheePasserellidae132025+67%1994
Mountain ChickadeeParidae132025-13%1994
Swainson's ThrushTurdidae132025+67%1994
Red CrossbillFringillidae132025-15%1995
Canada GooseAnatidae112024+50%2006
Pine SiskinFringillidae102025-55%1994
Northern House WrenTroglodytidae92025+83%1994
Hermit ThrushTurdidae92025-6%1994
Olive-sided FlycatcherTyrannidae82025+122%1994
Cassin's FinchFringillidae82025-24%1994
Cassin's VireoVireonidae82025+0%1994
Chestnut-backed ChickadeeParidae82025+13%1993
Black-headed GrosbeakCardinalidae72025+33%1996
MacGillivray's WarblerParulidae72025+475%1995
Black-capped ChickadeeParidae72025-37%1994
Cliff SwallowHirundinidae72024-71%1998
Cedar WaxwingBombycillidae72025+380%2009
Lazuli BuntingCardinalidae62025+6%1995
Ruby-crowned KingletRegulidae62025-78%1994
Hammond's FlycatcherTyrannidae52024+33%1994
Townsend's WarblerParulidae52025-83%1994
Golden-crowned KingletRegulidae52025-11%1994
Black-billed MagpieCorvidae52025+300%2016
Warbling VireoVireonidae52025+300%1997
Ruffed GrousePhasianidae52025-25%2004
Violet-green SwallowHirundinidae52025-85%2004
Willow FlycatcherTyrannidae41997+0%1993
Yellow-breasted ChatIcteriidae42025+63%1994
Mountain BluebirdTurdidae42023+167%2000
Hairy WoodpeckerPicidae42025+167%1995
Vaux's SwiftApodidae42024-10%1997
California QuailOdontophoridae42025+200%2009

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