BirdAnalyst
BBS Route · Oregon · BCR 10

Twickenham Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 86 species recorded across 14 survey years, still active.

86Species 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 →
14Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2010–2025Span
3Observers

Bird Species Found on Oregon Twickenham

Top 40 of 86 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 SwallowHirundinidae1072025+99%2012
Mourning DoveColumbidae412025+73%2012
Western MeadowlarkIcteridae392025-11%2012
European StarlingSturnidae372025+23%2012
Red-winged BlackbirdIcteridae372025-38%2012
American RobinTurdidae332025+109%2012
Bullock's OrioleIcteridae222025+259%2012
ChukarPhasianidae182025+113%2012
Brewer's BlackbirdIcteridae162025-24%2012
Lazuli BuntingCardinalidae162025-28%2012
Violet-green SwallowHirundinidae142025-53%2012
Western KingbirdTyrannidae132025-2%2012
Ash-throated FlycatcherTyrannidae122025+311%2012
American CrowCorvidae112025-4%2012
Rock WrenTroglodytidae112025+29%2012
Lark SparrowPasserellidae102025+68%2012
Vaux's SwiftApodidae102012n/an/a
Dusky FlycatcherTyrannidae102025+50%2022
Mountain QuailOdontophoridae92016+350%2011
Say's PhoebeTyrannidae82025+125%2014
Ring-necked PheasantPhasianidae72025-6%2012
Spotted TowheePasserellidae72025+46%2012
Common RavenCorvidae62025-36%2012
American KestrelFalconidae62025+100%2014
Lesser GoldfinchFringillidae62024+50%2016
Yellow WarblerParulidae62025+133%2016
Canada GooseAnatidae62025-14%2017
House FinchFringillidae62025+69%2022
Red-tailed HawkAccipitridae52025+44%2012
Gray FlycatcherTyrannidae52025+83%2012
Common YellowthroatParulidae52024+75%2016
Rock PigeonColumbidae52025+0%2017
California QuailOdontophoridae42025-74%2012
Spotted SandpiperScolopacidae42025+100%2016
Common NighthawkCaprimulgidae42025+233%2013
Cassin's FinchFringillidae42012n/an/a
Western TanagerCardinalidae42025+100%2019
Black-capped ChickadeeParidae42014+300%2012
Yellow-breasted ChatIcteriidae42025-52%2022
Western Wood-PeweeTyrannidae32025+111%2013

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