BirdAnalyst
Species · BCR 30 · BBS 2025 Release · 1966–2024

Common Yellowthroat In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastForest birds

Common Yellowthroat in New England / Mid-Atlantic Coast has edged down: down 14% on the route-weighted index since 1968.

-14%Since 1968TrendPercent 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 →
164Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Common Yellowthroat in New England / Mid-Atlantic Coast. See the full index history below.

Common Yellowthroat In New England / Mid-Atlantic Coast Population Forecast

If the recent trend holds, Common Yellowthroat in New England / Mid-Atlantic Coast is projected to fall about 18% by 2029 — from 12 in 2024 to a central estimate of 9.7 (95% range 6.7–13). A 5-year backtest shows a typical error of ±11%, with 100% of held-out values landing inside the 95% band.

-18%Change by 2029TrendPercent 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 →
9.7Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
6.7–1395% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±11%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Common Yellowthroat in New England / Mid-Atlantic Coast is projected to fall about 18% by 2029 — from 12 in 2024 to a central estimate of 9.7 (95% range 6.7–13). A 5-year backtest shows a typical error of ±11%, with 100% of held-out values landing inside the 95% band.19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
2025107.113
2026107.013
202710.06.913
20289.86.813
20299.76.713

Routes In New England / Mid-Atlantic Coast

Routes recording Common Yellowthroat in New England / Mid-Atlantic Coast.
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 →
WarrenCONNECTICUT682011
BlackbirdDELAWARE522024
HongaMARYLAND522024
MadisonMARYLAND492024
CokesburyMARYLAND392024
Woodstock 2CONNECTICUT332024
Gay HeadMASSACHUSETTS302024
Spraguetown 3NEW-JERSEY302024
BelchertownMASSACHUSETTS282024
Warren 2CONNECTICUT262024
Warren 2MASSACHUSETTS232024
HarringtonDELAWARE222024
Snow HillMARYLAND221976
Grove NeckMARYLAND221996
PomonaNEW-JERSEY222024
Block IslandRHODE-ISLAND222010
TruhartVIRGINIA222024
SinepuxentMARYLAND211978
Golden HillMARYLAND202024
Spraguetown 2NEW-JERSEY202007
MillsboroDELAWARE192024
S BarreMASSACHUSETTS192024
Wellfleet 2MASSACHUSETTS192024
Ware RiverMASSACHUSETTS192022
EpsomNEW-HAMPSHIRE192023

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.