BirdAnalyst
BBS Route · Iowa · BCR 11

Scranton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 104 species recorded across 51 survey years, still active.

104Species 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 →
51Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2025Span
6Observers

Bird Species Found on Iowa Scranton

Top 40 of 104 species by most recent count. Each links to its species trend.

Species recorded on the Scranton 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-winged BlackbirdIcteridae1402025-14%1971
American RobinTurdidae902025+366%1971
DickcisselCardinalidae672025-53%1971
Barn SwallowHirundinidae502025+22%1971
Common GrackleIcteridae492025-9%1971
Mourning DoveColumbidae472025+80%1971
European StarlingSturnidae422025-56%1971
Canada GooseAnatidae39202511×1994
Ring-necked PheasantPhasianidae332025-58%1971
House SparrowPasseridae282025-80%1971
Brown-headed CowbirdIcteridae272025-7%1971
KilldeerCharadriidae252025+129%1971
Western MeadowlarkIcteridae232025-90%1971
Purple MartinHirundinidae171999+140%1974
Cliff SwallowHirundinidae142025+607%1988
Black TernLaridae131999+460%1974
Brown ThrasherMimidae112025+11%1971
Northern ShovelerAnatidae111995+300%1978
Northern House WrenTroglodytidae102025+0%1971
American GoldfinchFringillidae92025-70%1971
Eastern KingbirdTyrannidae82025+0%1971
Upland SandpiperScolopacidae72025+115%1974
Red-headed WoodpeckerPicidae72025-67%1971
Common YellowthroatParulidae72025-80%1971
Great-tailed GrackleIcteridae71996+600%1994
Bank SwallowHirundinidae62010+29%1973
Eurasian Collared-DoveColumbidae62025+14%2018
MallardAnatidae52024-13%1976
Rock PigeonColumbidae42025-89%1971
Chimney SwiftApodidae42010-22%1971
BobolinkIcteridae42024-76%1971
Vesper SparrowPasserellidae42025-90%1971
Hooded MerganserAnatidae42013n/an/a
Song SparrowPasserellidae32025+0%1971
Swamp SparrowPasserellidae32003+40%1980
Tree SwallowHirundinidae32013+0%1985
Turkey VultureCathartidae32025+50%2012
SoraRallidae21993+100%1967
Red-tailed HawkAccipitridae22025+200%1974
Blue JayCorvidae22025-77%1971

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