BirdAnalyst
BBS Route · New Hampshire · BCR 14

Marlow Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 121 species recorded across 58 survey years, still active.

121Species 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 →
1966–2024Span
4Observers

Bird Species Found on New Hampshire Marlow

Top 40 of 121 species by most recent count. Each links to its species trend.

Species recorded on the Marlow 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 RobinTurdidae342024+10%1968
Red-eyed VireoVireonidae282024+30%1968
American CrowCorvidae242024+164%1968
Song SparrowPasserellidae212024-7%1968
Common YellowthroatParulidae212024-32%1968
VeeryTurdidae182024-44%1968
Red-winged BlackbirdIcteridae172024-23%1968
Tufted TitmouseParidae17202415×1987
Mourning DoveColumbidae162024+347%1974
Cedar WaxwingBombycillidae162024-5%1968
Gray CatbirdMimidae162024+23%1968
OvenbirdParulidae152024-4%1968
Yellow-bellied SapsuckerPicidae142024+138%1969
Blue JayCorvidae142024-14%1968
American GoldfinchFringillidae132024-18%1968
Northern House WrenTroglodytidae122024+520%1968
Black-capped ChickadeeParidae122024+74%1968
Eastern PhoebeTyrannidae112024-15%1968
European StarlingSturnidae102024-79%1968
Chestnut-sided WarblerParulidae102024+2%1968
House SparrowPasseridae102024-53%1968
Blue-headed VireoVireonidae102024+114%1969
Common RavenCorvidae102024+183%1989
Northern MockingbirdMimidae102007+250%1983
Common GrackleIcteridae92024-4%1968
Northern CardinalCardinalidae92024+560%1980
Pine WarblerParulidae92024+567%1993
Scarlet TanagerCardinalidae72024-46%1968
Chipping SparrowPasserellidae62024+108%1968
Swamp SparrowPasserellidae62024-32%1968
American RedstartParulidae62024+10%1968
Wild TurkeyPhasianidae62024+143%2007
Downy WoodpeckerPicidae52024+17%1968
Indigo BuntingCardinalidae52024+86%1969
Tree SwallowHirundinidae52024-60%1968
Warbling VireoVireonidae52024-27%1968
Pileated WoodpeckerPicidae52024+667%1972
Eastern Wood-PeweeTyrannidae52024+31%1969
Hairy WoodpeckerPicidae42024+300%1968
Eastern KingbirdTyrannidae42024-68%1969

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