BirdAnalyst
BBS Route · South Dakota · BCR 11

Britton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 122 species recorded across 42 survey years, still active.

122Species 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 →
42Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2023Span
11Observers

Bird Species Found on South Dakota Britton

Top 40 of 122 species by most recent count. Each links to its species trend.

Species recorded on the Britton 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
Canada GooseAnatidae101202324×1979
Ring-necked PheasantPhasianidae852023+717%1970
Red-winged BlackbirdIcteridae642023-32%1970
Mourning DoveColumbidae632023+5%1970
Common GrackleIcteridae552023+39%1970
Western MeadowlarkIcteridae452023-40%1970
Brown-headed CowbirdIcteridae402023+89%1970
Cliff SwallowHirundinidae342023+64%1985
American RobinTurdidae322023+166%1970
Yellow-headed BlackbirdIcteridae302023-49%1970
Ring-billed GullLaridae292023+760%1974
Song SparrowPasserellidae252023+813%1970
Yellow WarblerParulidae242023+136%1970
Northern House WrenTroglodytidae222023+93%1974
American White PelicanPelecanidae202023+39%1980
Marsh WrenTroglodytidae202023+160%1999
MallardAnatidae192023-27%1970
KilldeerCharadriidae182023+9%1970
Barn SwallowHirundinidae182023+513%1970
House SparrowPasseridae172023-72%1970
Orchard OrioleIcteridae152023+360%1975
Franklin's GullLaridae142021+3%1973
Clay-colored SparrowPasserellidae132023+475%1973
Western GrebePodicipedidae122023+40%2004
European StarlingSturnidae112023+55%1973
Common YellowthroatParulidae112023+500%1972
Horned LarkAlaudidae102023+200%1972
Eastern KingbirdTyrannidae92023+164%1971
Vesper SparrowPasserellidae92023+117%1972
Rock PigeonColumbidae82022+191%1973
Savannah SparrowPasserellidae82023+67%1978
Willow FlycatcherTyrannidae82023+300%1983
Chipping SparrowPasserellidae72023+125%1971
DickcisselCardinalidae72023+93%1973
Warbling VireoVireonidae72023+450%1983
Brown ThrasherMimidae62023-7%1972
Grasshopper SparrowPasserellidae62023-16%1971
Pied-billed GrebePodicipedidae52022+120%1979
GadwallAnatidae52023-86%1972
Green-winged TealAnatidae52008+50%1980

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