BirdAnalyst
BBS Route · New Hampshire · BCR 14

Clarksville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 124 species recorded across 58 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 →
58Years 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
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
American CrowCorvidae512025+91%1968
Red-eyed VireoVireonidae472025+496%1968
Northern ParulaParulidae38202512×1968
American RobinTurdidae252025-57%1968
Winter WrenTroglodytidae202025+833%1968
Cedar WaxwingBombycillidae182025+35%1969
White-throated SparrowPasserellidae172025-11%1968
Song SparrowPasserellidae162025+14%1968
Chestnut-sided WarblerParulidae162025+119%1973
Chipping SparrowPasserellidae132025+94%1968
Canada GooseAnatidae122024-43%2009
Common YellowthroatParulidae112025+89%1968
Red-breasted NuthatchSittidae112025+75%1969
Red-winged BlackbirdIcteridae102025-77%1968
American RedstartParulidae102025+20%1968
Pine SiskinFringillidae102009+113%1974
Blackburnian WarblerParulidae92025+475%1969
OvenbirdParulidae92025+170%1968
Black-throated Green WarblerParulidae92025+580%1972
Blue JayCorvidae72025-30%1968
Northern Rough-winged SwallowHirundinidae72015+600%1975
Blue-headed VireoVireonidae62025+460%1968
Black-capped ChickadeeParidae62025+220%1968
Swainson's ThrushTurdidae62025+67%1968
American GoldfinchFringillidae52025-61%1968
Hermit ThrushTurdidae52025+450%1968
Downy WoodpeckerPicidae52025+17%1975
Magnolia WarblerParulidae42025+0%1969
Bay-breasted WarblerParulidae42007-10%1968
VeeryTurdidae42025-63%1968
Black-throated Blue WarblerParulidae42025+100%1973
Hairy WoodpeckerPicidae42024+300%1973
Northern MockingbirdMimidae42001+300%1971
Yellow WarblerParulidae42025-33%1976
Wilson's SnipeScolopacidae32023+0%1968
Chimney SwiftApodidae32019+50%1971
Alder FlycatcherTyrannidae32025+0%1968
Brown-headed CowbirdIcteridae32000-76%1968
Common LoonGaviidae32025+0%1974
Northern WaterthrushParulidae32023+33%1969

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