BirdAnalyst
BBS Route · Vermont · BCR 13

Grand Isle Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 128 species recorded across 46 survey years, still active.

128Species 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 →
46Years 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
4Observers

Bird Species Found on Vermont Grand Isle

Top 40 of 128 species by most recent count. Each links to its species trend.

Species recorded on the Grand Isle 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-winged BlackbirdIcteridae782024-48%1969
Ring-billed GullLaridae572024+295%1970
European StarlingSturnidae442024-39%1969
American CrowCorvidae312024+21%1969
American RobinTurdidae232024-46%1969
Song SparrowPasserellidae202024-42%1969
Northern House WrenTroglodytidae202024+262%1969
Northern CardinalCardinalidae19202416×1975
Rock PigeonColumbidae182023-36%1969
MallardAnatidae152024+700%1970
Yellow WarblerParulidae152024+125%1969
Tree SwallowHirundinidae132024-7%1969
Purple MartinHirundinidae121998-33%1969
Common GrackleIcteridae112024-78%1969
BobolinkIcteridae82023-57%1969
Red-eyed VireoVireonidae82024+100%1969
Black-capped ChickadeeParidae82024+167%1970
Northern Rough-winged SwallowHirundinidae82010+300%2006
Wood DuckAnatidae72023-9%1970
Chipping SparrowPasserellidae72024+267%1970
OspreyPandionidae72024+117%2000
Mourning DoveColumbidae62024+62%1969
Brown-headed CowbirdIcteridae62024+240%1970
House SparrowPasseridae62023-72%1969
Cliff SwallowHirundinidae61985+43%1972
Turkey VultureCathartidae62023+71%1998
Eastern PhoebeTyrannidae42024+20%1969
Blue JayCorvidae42023+100%1971
American GoldfinchFringillidae42024-76%1969
Vesper SparrowPasserellidae41987+63%1969
Savannah SparrowPasserellidae42024+275%1969
Warbling VireoVireonidae42024+82%1970
Brown CreeperCerthiidae41985n/an/a
Eastern KingbirdTyrannidae32024-50%1969
Barn SwallowHirundinidae32024-90%1969
Western Cattle-EgretArdeidae31983n/an/a
Canada GooseAnatidae32024+10%1991
Spotted SandpiperScolopacidae22012-43%1969
Great Crested FlycatcherTyrannidae22023-61%1970
Eastern Wood-PeweeTyrannidae22024-64%1969

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