BirdAnalyst
BBS Route · Michigan · BCR 12

Crystal Fls Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 130 species recorded across 29 survey years, still active.

130Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1979–2024Span
4Observers

Bird Species Found on Michigan Crystal Fls

Top 40 of 130 species by most recent count. Each links to its species trend.

Species recorded on the Crystal Fls 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-eyed VireoVireonidae1132024+404%1981
American CrowCorvidae342024+189%1981
OvenbirdParulidae322024+77%1981
American RobinTurdidae242024+51%1981
Indigo BuntingCardinalidae192024+148%1982
Red-winged BlackbirdIcteridae172024+100%1981
Black-capped ChickadeeParidae172024+208%1982
Canada GooseAnatidae172023-59%2011
Blue JayCorvidae162024+221%1981
Common GrackleIcteridae162024+179%1981
Chipping SparrowPasserellidae162024+780%1981
Common YellowthroatParulidae15202412×1983
European StarlingSturnidae112024-6%1981
Rose-breasted GrosbeakCardinalidae112024+9%1981
Black-and-white WarblerParulidae112024+240%1990
White-throated SparrowPasserellidae102024+29%1981
Northern House WrenTroglodytidae102024+175%1981
Nashville WarblerParulidae102024+880%1990
Northern Rough-winged SwallowHirundinidae92022+360%1985
Chestnut-sided WarblerParulidae82024+121%1981
American RedstartParulidae82024+146%1981
Gray CatbirdMimidae82023+63%1983
Hermit ThrushTurdidae82024+36%1989
Yellow-bellied SapsuckerPicidae72024+360%1984
Chimney SwiftApodidae72024+41%1981
Song SparrowPasserellidae72024+0%1981
Tree SwallowHirundinidae72023-58%1981
Mourning DoveColumbidae72024+975%1983
Purple MartinHirundinidae61992+229%1983
Wood ThrushTurdidae62024+50%1981
Pine WarblerParulidae62024+120%1990
Least FlycatcherTyrannidae52024+60%1981
Blackburnian WarblerParulidae52024+167%2004
House SparrowPasseridae51991-18%1981
White-breasted NuthatchSittidae52024+150%1989
Brewer's BlackbirdIcteridae52017+33%2014
Sandhill CraneGruidae52024+47%2011
Turkey VultureCathartidae52022+125%2011
Eastern PhoebeTyrannidae42024-30%1989
American GoldfinchFringillidae42024+217%1982

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