BirdAnalyst
BBS Route · Indiana · BCR 22

Milroy Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 102 species recorded across 52 survey years, still active.

102Species 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 →
52Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2025Span
10Observers

Bird Species Found on Indiana Milroy

Top 40 of 102 species by most recent count. Each links to its species trend.

Species recorded on the Milroy 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 GrackleIcteridae1132025+186%1968
Red-winged BlackbirdIcteridae662025-78%1968
Song SparrowPasserellidae352025-5%1968
American RobinTurdidae322025+167%1968
KilldeerCharadriidae312025+783%1968
Mourning DoveColumbidae262025-23%1968
Tree SwallowHirundinidae212025+380%2005
House SparrowPasseridae202025-83%1968
Indigo BuntingCardinalidae152025+21%1968
European StarlingSturnidae142025-81%1968
American GoldfinchFringillidae112025-43%1968
Brown-headed CowbirdIcteridae82025+6%1968
Purple MartinHirundinidae82024-58%1968
Barn SwallowHirundinidae72024+738%1968
Carolina WrenTroglodytidae72025+160%1970
Turkey VultureCathartidae62024+260%1969
American CrowCorvidae62025-29%1968
Savannah SparrowPasserellidae62025-61%1968
Northern CardinalCardinalidae62025-15%1968
Eastern MeadowlarkIcteridae52025-78%1968
Chipping SparrowPasserellidae52025+625%1969
Northern MockingbirdMimidae52025+200%1968
House FinchFringillidae52025-23%1997
Tufted TitmouseParidae42025-5%1968
Wood ThrushTurdidae42021+233%1971
Bank SwallowHirundinidae41993+25%1986
Black VultureCathartidae41986n/an/a
Northern BobwhiteOdontophoridae32024-89%1968
Yellow-billed CuckooCuculidae32021+17%1968
Eastern KingbirdTyrannidae32021+17%1968
Blue JayCorvidae32025+14%1968
DickcisselCardinalidae32025-77%1968
Northern Rough-winged SwallowHirundinidae32018+50%1971
Ruby-throated HummingbirdTrochilidae32010+67%2000
Common NighthawkCaprimulgidae32024+200%1979
Red-bellied WoodpeckerPicidae22024+320%1968
Chimney SwiftApodidae22025-6%1969
Eastern PhoebeTyrannidae22021+0%1969
Willow FlycatcherTyrannidae22021-33%1997
Baltimore OrioleIcteridae22021+40%1971

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