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BBS Route · Michigan · BCR 12

Cathro Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 138 species recorded across 33 survey years, still active.

138Species 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 →
33Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2016Span
6Observers

Bird Species Found on Michigan Cathro

Top 40 of 138 species by most recent count. Each links to its species trend.

Species recorded on the Cathro 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 GooseAnatidae185201619×1996
Ring-billed GullLaridae1162016+736%1977
Herring GullLaridae100201622×1986
Wild TurkeyPhasianidae332016+960%1994
American CrowCorvidae312016+93%1970
European StarlingSturnidae302016-41%1970
American RobinTurdidae302016+82%1970
Red-winged BlackbirdIcteridae242016+13%1970
Mourning DoveColumbidae202016+191%1970
OvenbirdParulidae202016+179%1970
Common YellowthroatParulidae182016+263%1970
Tree SwallowHirundinidae172016+613%1971
BobolinkIcteridae112016-38%1970
Common GrackleIcteridae112016+155%1970
Chipping SparrowPasserellidae112016+47%1970
Song SparrowPasserellidae112016-12%1970
Blue JayCorvidae102016+64%1970
White-throated SparrowPasserellidae102016+243%1970
Bank SwallowHirundinidae102007+40%1989
Red-eyed VireoVireonidae102016+300%1970
Black-capped ChickadeeParidae102016+264%1970
Common RavenCorvidae102016+850%1982
Brewer's BlackbirdIcteridae101990+100%1988
MallardAnatidae92016-43%1971
Great Crested FlycatcherTyrannidae92016+75%1970
Savannah SparrowPasserellidae92016-23%1970
Rose-breasted GrosbeakCardinalidae92016+333%1970
Yellow WarblerParulidae92016+100%1971
Eastern PhoebeTyrannidae92016+240%1971
Alder FlycatcherTyrannidae82016+18%1971
American GoldfinchFringillidae82016+0%1970
VeeryTurdidae82016+19%1970
Grasshopper SparrowPasserellidae82015+238%1993
Eastern KingbirdTyrannidae72016+60%1970
Eastern MeadowlarkIcteridae72016+11%1970
Warbling VireoVireonidae72016+300%1980
Sandhill CraneGruidae72016+85%2009
Least FlycatcherTyrannidae62016+67%1970
Barn SwallowHirundinidae62016-10%1970
Chestnut-sided WarblerParulidae62008+67%1970

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