BirdAnalyst
BBS Route · Oregon · BCR 10

Twickenham Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 85 species recorded across 13 survey years, still active.

85Species 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 →
13Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2010–2024Span
3Observers

Bird Species Found on Oregon Twickenham

Top 40 of 85 species by most recent count. Each links to its species trend.

Species recorded on the Twickenham 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
Cliff SwallowHirundinidae1402024+58%2012
Western MeadowlarkIcteridae322024-11%2012
American RobinTurdidae322024+88%2012
Mourning DoveColumbidae302024+63%2012
Western KingbirdTyrannidae272024-2%2012
Red-winged BlackbirdIcteridae232024-49%2012
European StarlingSturnidae222024+14%2012
Bullock's OrioleIcteridae212024+206%2012
Rock WrenTroglodytidae212024+90%2012
Lazuli BuntingCardinalidae202024-22%2012
Ash-throated FlycatcherTyrannidae162024+311%2012
Lark SparrowPasserellidae102024+132%2012
Vaux's SwiftApodidae102012n/an/a
ChukarPhasianidae92024+106%2012
Brown-headed CowbirdIcteridae92024-71%2012
Mountain QuailOdontophoridae92016+350%2011
Western Wood-PeweeTyrannidae82023+200%2013
Red-tailed HawkAccipitridae72024+22%2012
Common RavenCorvidae62024-23%2012
Brewer's BlackbirdIcteridae62024-27%2012
Violet-green SwallowHirundinidae62024-67%2012
Canyon WrenTroglodytidae62024+167%2012
Lesser GoldfinchFringillidae62024+50%2016
Say's PhoebeTyrannidae62024+100%2014
Canada GooseAnatidae62024+20%2016
American CrowCorvidae52024-42%2012
Yellow WarblerParulidae52024+117%2016
Black-billed MagpieCorvidae52021+250%2014
Common YellowthroatParulidae52024+75%2016
California QuailOdontophoridae42024-74%2012
Ring-necked PheasantPhasianidae42024-29%2012
Gray FlycatcherTyrannidae42024+100%2012
Spotted TowheePasserellidae42024+18%2012
Cassin's FinchFringillidae42012n/an/a
Black-capped ChickadeeParidae42014+300%2012
Dusky FlycatcherTyrannidae42024+33%2021
Bank SwallowHirundinidae42024-60%2021
American GoldfinchFringillidae32024+190%2012
Spotted SandpiperScolopacidae32024+125%2016
American KestrelFalconidae32024+33%2014

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