BirdAnalyst
BBS Route · Michigan · BCR 12

Crystal Fls Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 130 species recorded across 30 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 →
30Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1979–2025Span
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 VireoVireonidae1122025+453%1981
American CrowCorvidae512025+185%1981
OvenbirdParulidae462025+98%1981
American RobinTurdidae332025+34%1981
Common RavenCorvidae262025+179%1982
Indigo BuntingCardinalidae232025+187%1982
Blue JayCorvidae222025+154%1981
Chipping SparrowPasserellidae202025+940%1981
Nashville WarblerParulidae202025+920%1990
Common GrackleIcteridae182025+142%1981
Mourning DoveColumbidae162025+800%1983
Yellow-bellied SapsuckerPicidae152025+560%1984
Red-winged BlackbirdIcteridae152025+65%1981
Black-capped ChickadeeParidae152025+217%1982
American RedstartParulidae142025+169%1981
Cedar WaxwingBombycillidae142025+158%1982
American GoldfinchFringillidae132025+350%1982
Common YellowthroatParulidae13202511×1983
European StarlingSturnidae122025+0%1981
Rose-breasted GrosbeakCardinalidae122025-6%1981
White-throated SparrowPasserellidae112025+59%1981
Chimney SwiftApodidae102025+12%1981
Chestnut-sided WarblerParulidae102025+121%1981
Northern House WrenTroglodytidae102025+250%1981
Canada GooseAnatidae102025-60%2011
Northern Rough-winged SwallowHirundinidae92022+360%1985
Eastern Wood-PeweeTyrannidae92025+29%1990
Song SparrowPasserellidae82025+13%1981
Rock PigeonColumbidae82025+150%1983
Wild TurkeyPhasianidae82025-52%2010
Red-breasted NuthatchSittidae72025+140%1983
Wood ThrushTurdidae72025+113%1981
Black-and-white WarblerParulidae72025+170%1990
Purple MartinHirundinidae61992+229%1983
Eastern KingbirdTyrannidae52025+0%1981
Eastern PhoebeTyrannidae52025+10%1989
Tree SwallowHirundinidae52025-46%1981
Black-throated Green WarblerParulidae52025+175%1981
House SparrowPasseridae51991-18%1981
Hermit ThrushTurdidae52025+55%1989

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