BirdAnalyst
BBS Route · Washington · BCR 10

L Pend O Nwr Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 131 species recorded across 28 survey years, still active.

131Species 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 →
28Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2024Span
4Observers

Bird Species Found on Washington L Pend O Nwr

Top 40 of 131 species by most recent count. Each links to its species trend.

Species recorded on the L Pend O Nwr 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-breasted NuthatchSittidae532024+143%1997
Western TanagerCardinalidae452024+395%1997
Red CrossbillFringillidae362024+39%1997
Swainson's ThrushTurdidae352024+15%1997
Clark's NutcrackerCorvidae311995n/an/a
Western Wood-PeweeTyrannidae302024+667%1997
American RobinTurdidae232024+17%1997
Pine SiskinFringillidae222024+4%2000
Chipping SparrowPasserellidae222024+34%1997
Townsend's WarblerParulidae212024+20%1997
Black-capped ChickadeeParidae212024+112%1997
Canada GooseAnatidae162024+233%2013
Rock PigeonColumbidae162021+188%2015
Dusky FlycatcherTyrannidae132024+333%2000
Mountain ChickadeeParidae112024-18%1997
Song SparrowPasserellidae92024+317%1997
Hammond's FlycatcherTyrannidae82024-43%1998
Common RavenCorvidae82024+53%1997
Yellow WarblerParulidae72024+43%1997
Wild TurkeyPhasianidae72021+333%2003
Say's PhoebeTyrannidae72024+160%2003
Red-winged BlackbirdIcteridae72024+48%1998
Vesper SparrowPasserellidae72024+100%2000
European StarlingSturnidae62024+105%1997
Western MeadowlarkIcteridae62024-28%1997
Pacific WrenTroglodytidae62024-44%1997
KilldeerCharadriidae62023+33%1998
Yellow-headed BlackbirdIcteridae52024+35%1998
Black-headed GrosbeakCardinalidae42024+0%1997
Cliff SwallowHirundinidae42023-53%1997
Red-eyed VireoVireonidae42024+29%1998
Cassin's VireoVireonidae42024-47%1997
Nashville WarblerParulidae42024+0%1997
MacGillivray's WarblerParulidae42024-18%1997
Pygmy NuthatchSittidae42023+86%2003
Golden-crowned KingletRegulidae42024-59%1997
Ring-necked DuckAnatidae42017+100%2014
Black-billed MagpieCorvidae42024-46%1999
Northern Rough-winged SwallowHirundinidae42023-67%2014
Chestnut-backed ChickadeeParidae42024+77%2002

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