BirdAnalyst
BBS Route · Minnesota · BCR 12

Hart Lake Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 126 species recorded across 54 survey years, still active.

126Species 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 →
54Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2024Span
5Observers

Bird Species Found on Minnesota Hart Lake

Top 40 of 126 species by most recent count. Each links to its species trend.

Species recorded on the Hart Lake 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
White-throated SparrowPasserellidae792024+78%1969
OvenbirdParulidae702024+12%1969
Nashville WarblerParulidae572024-2%1969
VeeryTurdidae552024+20%1969
Red-eyed VireoVireonidae542024+46%1969
Chestnut-sided WarblerParulidae522024+7%1969
American RobinTurdidae382024+63%1969
Double-crested CormorantPhalacrocoracidae381997+660%1995
Mourning WarblerParulidae352024+53%1969
American RedstartParulidae322024+367%1969
Common YellowthroatParulidae292024+41%1969
Blue JayCorvidae242024+98%1969
Song SparrowPasserellidae232024+165%1969
American CrowCorvidae172024+14%1969
Chipping SparrowPasserellidae172024+105%1969
Black-capped ChickadeeParidae172024+253%1970
Magnolia WarblerParulidae162024+277%1969
Swamp SparrowPasserellidae132024+160%1969
Rose-breasted GrosbeakCardinalidae132024+94%1969
Black-and-white WarblerParulidae132024+207%1969
Cedar WaxwingBombycillidae122024-10%1969
Canada WarblerParulidae122024+43%1969
Hermit ThrushTurdidae112024-42%1969
Alder FlycatcherTyrannidae102024+106%1969
Least FlycatcherTyrannidae102024+59%1969
Blackburnian WarblerParulidae92024+58%1970
Yellow-bellied SapsuckerPicidae92024+350%1975
Northern ParulaParulidae92024+667%1981
Red-winged BlackbirdIcteridae82024+100%1969
Winter WrenTroglodytidae72024+240%1975
Red-breasted NuthatchSittidae62024+383%1969
Common RavenCorvidae52024+140%1970
Purple FinchFringillidae52024-13%1969
Pine WarblerParulidae52024+167%1977
Blue-headed VireoVireonidae42024+100%1970
Canada JayCorvidae42015+0%1978
Great Blue HeronArdeidae42009+100%1973
Wood ThrushTurdidae42024+125%1974
Yellow-bellied FlycatcherTyrannidae42024+200%1983
American GoldfinchFringillidae32024+233%1971

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