BirdAnalyst
BBS Route · Minnesota · BCR 11

Courtland Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 129 species recorded across 37 survey years, still active.

129Species 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 →
37Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1978–2025Span
3Observers

Bird Species Found on Minnesota Courtland

Top 40 of 129 species by most recent count. Each links to its species trend.

Species recorded on the Courtland 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
Common GrackleIcteridae642025-61%1980
European StarlingSturnidae622025-30%1980
Red-winged BlackbirdIcteridae572025-67%1980
American RobinTurdidae552025+10%1980
Canada GooseAnatidae442025+321%1984
House SparrowPasseridae392025-82%1980
Barn SwallowHirundinidae362025-70%1980
Mourning DoveColumbidae302025-50%1980
Brown-headed CowbirdIcteridae302025-62%1980
Rock PigeonColumbidae292025-10%1980
Northern House WrenTroglodytidae202025-61%1980
American CrowCorvidae172025-52%1980
MallardAnatidae162025+34%1980
Horned LarkAlaudidae162025-61%1980
KilldeerCharadriidae132025+10%1980
Turkey VultureCathartidae132025-17%2019
Ring-necked PheasantPhasianidae122025-14%1980
CanvasbackAnatidae121991n/an/a
Northern CardinalCardinalidae102025+338%1983
Eurasian Collared-DoveColumbidae92025+31%2022
Chipping SparrowPasserellidae82025-53%1980
Yellow-headed BlackbirdIcteridae72025-82%1980
American GoldfinchFringillidae72025-8%1980
Gray CatbirdMimidae72025+286%1980
DickcisselCardinalidae62025-59%1980
House FinchFringillidae62025+0%1999
Chimney SwiftApodidae52025+21%1980
Common YellowthroatParulidae52025-80%1980
Ring-necked DuckAnatidae51991n/an/a
Franklin's GullLaridae41978n/an/a
Indigo BuntingCardinalidae42025-64%1980
Cliff SwallowHirundinidae42025-55%1982
Eared GrebePodicipedidae42005n/an/a
Pied-billed GrebePodicipedidae32025-33%1980
Savannah SparrowPasserellidae32019-76%1980
Common TernLaridae31991n/an/a
GadwallAnatidae21985+0%1978
American BitternArdeidae21991+50%1983
Green HeronArdeidae22023+0%1980
American CootRallidae22008-73%1980

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