BirdAnalyst
BBS Route · Vermont · BCR 14

Middlesex Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 130 species recorded across 53 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 →
53Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2024Span
4Observers

Bird Species Found on Vermont Middlesex

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

Species recorded on the Middlesex 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 VireoVireonidae652024+26%1970
American CrowCorvidae432024+126%1970
OvenbirdParulidae412024+900%1970
American RobinTurdidae402024-29%1970
Song SparrowPasserellidae312024-32%1970
Black-capped ChickadeeParidae312024+41%1970
Common YellowthroatParulidae282024+29%1970
Cedar WaxwingBombycillidae242024+81%1970
Red-winged BlackbirdIcteridae232024-66%1970
Blue JayCorvidae182024+15%1970
Chestnut-sided WarblerParulidae152024+122%1970
American GoldfinchFringillidae142024-33%1970
Red-breasted NuthatchSittidae122024+300%1970
Gray CatbirdMimidae112024+0%1970
Mourning DoveColumbidae112024+625%1972
Alder FlycatcherTyrannidae102024+142%1970
VeeryTurdidae92024-41%1970
MallardAnatidae92023+267%2010
Black-throated Green WarblerParulidae82024+189%1971
Yellow-bellied SapsuckerPicidae72024+600%1970
Eastern PhoebeTyrannidae72024+111%1970
Chipping SparrowPasserellidae72024-33%1970
Indigo BuntingCardinalidae72024+100%1970
Northern ParulaParulidae72024+667%1971
Hermit ThrushTurdidae72024-68%1970
Northern Rough-winged SwallowHirundinidae71986+200%1977
Common RavenCorvidae72024+120%1985
Savannah SparrowPasserellidae62024+225%1970
Blackburnian WarblerParulidae62024+300%1970
Winter WrenTroglodytidae62024+67%1971
Wilson's SnipeScolopacidae62024+333%1984
Pine WarblerParulidae62024+300%2018
European StarlingSturnidae52024-93%1970
Brown CreeperCerthiidae52024+200%1976
BobolinkIcteridae42024-27%1970
Common GrackleIcteridae42024+69%1970
White-throated SparrowPasserellidae42024-64%1970
Scarlet TanagerCardinalidae42024-11%1970
Wood ThrushTurdidae42024-77%1970
Double-crested CormorantPhalacrocoracidae42011n/an/a

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