BirdAnalyst
BBS Route · New Hampshire · BCR 14

Clarksville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 124 species recorded across 57 survey years, still active.

124Species 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 →
57Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2024Span
5Observers

Bird Species Found on New Hampshire Clarksville

Top 40 of 124 species by most recent count. Each links to its species trend.

Species recorded on the Clarksville 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 VireoVireonidae392024+426%1968
Northern ParulaParulidae38202412×1968
American CrowCorvidae362024+88%1968
White-throated SparrowPasserellidae342024-8%1968
Song SparrowPasserellidae252024+4%1968
Cedar WaxwingBombycillidae242024-5%1969
Black-capped ChickadeeParidae222024+367%1968
American RobinTurdidae222024-57%1968
Common YellowthroatParulidae202024+142%1968
Winter WrenTroglodytidae162024+883%1968
Golden-crowned KingletRegulidae132024+118%1969
Blue-headed VireoVireonidae122024+580%1968
Canada GooseAnatidae122024-43%2009
Chestnut-sided WarblerParulidae112024+95%1973
Black-throated Green WarblerParulidae112024+600%1972
Common GrackleIcteridae102024+18%1968
Blackburnian WarblerParulidae102024+413%1969
Pine SiskinFringillidae102009+113%1974
Chipping SparrowPasserellidae92024+77%1968
American GoldfinchFringillidae82023-66%1968
Magnolia WarblerParulidae72024+13%1969
Hermit ThrushTurdidae72024+400%1968
Northern Rough-winged SwallowHirundinidae72015+600%1975
OvenbirdParulidae62024+170%1968
American RedstartParulidae62024+15%1968
Swainson's ThrushTurdidae62024+83%1968
Red-breasted NuthatchSittidae52024+58%1969
Alder FlycatcherTyrannidae42024+23%1968
Blue JayCorvidae42024-26%1968
Bay-breasted WarblerParulidae42007-10%1968
Ruby-crowned KingletRegulidae42024+367%1968
Hairy WoodpeckerPicidae42024+300%1973
Northern MockingbirdMimidae42001+300%1971
Pileated WoodpeckerPicidae42024+133%1980
Wilson's SnipeScolopacidae32023+0%1968
Yellow-bellied SapsuckerPicidae32024+75%1968
Chimney SwiftApodidae32019+50%1971
Brown-headed CowbirdIcteridae32000-76%1968
Red-winged BlackbirdIcteridae32024-81%1968
Northern WaterthrushParulidae32023+33%1969

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