BirdAnalyst
Species · BCR 30 · BBS 2026 Release · 1966–2025

Common Yellowthroat In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastForest birds

Common Yellowthroat in New England / Mid-Atlantic Coast has held roughly steady: down 9% on the route-weighted index since 1968.

-9%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 →
59YearsYears 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 20% by 2030 — from 12 in 2025 to a central estimate of 9.8 (95% range 6.7–13). A 5-year backtest shows a typical error of ±13.4%, with 100% of held-out values landing inside the 95% band.

-20%Change by 2030TrendPercent 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 →
9.8Projected 2030 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 →
±13.4%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 20% by 2030 — from 12 in 2025 to a central estimate of 9.8 (95% range 6.7–13). A 5-year backtest shows a typical error of ±13.4%, with 100% of held-out values landing inside the 95% band.19662030
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 →
2026107.113
2027107.013
202810.06.913
20299.96.813
20309.86.713

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
HongaMARYLAND542025
MadisonMARYLAND542025
BlackbirdDELAWARE422025
CokesburyMARYLAND422025
Spraguetown 3NEW-JERSEY412025
Block IslandRHODE-ISLAND392025
Gay HeadMASSACHUSETTS332025
FriendshipNEW-JERSEY282025
Woodstock 2CONNECTICUT272025
S BarreMASSACHUSETTS262025
BelchertownMASSACHUSETTS232025
Snow HillMARYLAND221976
Grove NeckMARYLAND221996
TruhartVIRGINIA222024
NewarkMARYLAND212025
SinepuxentMARYLAND211978
Warren 2MASSACHUSETTS212025
DoverNEW-HAMPSHIRE212025
Spraguetown 2NEW-JERSEY202007
Milton 2DELAWARE192025
Ware RiverMASSACHUSETTS192022
ShannockRHODE-ISLAND192025
ShermanCONNECTICUT182019
ChilmarkMASSACHUSETTS181983

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.