BirdAnalyst
BBS Route · Vermont · BCR 14

Post Mills Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 127 species recorded across 48 survey years, still active.

127Species 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 →
48Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2025Span
7Observers

Bird Species Found on Vermont Post Mills

Top 40 of 127 species by most recent count. Each links to its species trend.

Species recorded on the Post Mills 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 VireoVireonidae352025+125%1969
American RobinTurdidae302025-67%1969
Canada GooseAnatidae222025+200%2004
American CrowCorvidae212025-23%1969
Song SparrowPasserellidae212025-53%1969
OvenbirdParulidae182025+42%1969
Rock PigeonColumbidae182025+429%1978
Red-winged BlackbirdIcteridae142025-77%1969
Chestnut-sided WarblerParulidae112025+185%1969
Common YellowthroatParulidae102025-49%1969
Northern House WrenTroglodytidae102025+100%1969
VeeryTurdidae102025-51%1969
Tufted TitmouseParidae10202515×1992
Black-capped ChickadeeParidae82025+52%1969
Common GrackleIcteridae72025-30%1969
American RedstartParulidae72025-52%1969
Gray CatbirdMimidae62025-44%1969
Chipping SparrowPasserellidae52025-82%1969
Black-and-white WarblerParulidae52025-6%1969
Northern CardinalCardinalidae52025+30%1983
American Black DuckAnatidae41999-29%1991
Chimney SwiftApodidae42022-90%1976
Scarlet TanagerCardinalidae42024-56%1969
Wild TurkeyPhasianidae42025+300%2001
Blue JayCorvidae32025-61%1969
Yellow WarblerParulidae32025-64%1969
Magnolia WarblerParulidae31994-60%1976
Alder FlycatcherTyrannidae32025+150%1977
Common RavenCorvidae32024+75%1981
Hairy WoodpeckerPicidae22025+75%1975
Downy WoodpeckerPicidae22024-43%1975
Yellow-bellied SapsuckerPicidae22025+180%1975
Eastern PhoebeTyrannidae22025-53%1969
Eastern Wood-PeweeTyrannidae22024-50%1969
Least FlycatcherTyrannidae22022-89%1969
BobolinkIcteridae22025-44%1969
Tree SwallowHirundinidae22025-85%1969
Bank SwallowHirundinidae22012-87%1969
Warbling VireoVireonidae22025-62%1969
House SparrowPasseridae22024-86%1976

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