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

House Finch In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastGeneralists

House Finch in New England / Mid-Atlantic Coast has surged: up 22× on the route-weighted index since 1968.

22×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 →
155Routes 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

House Finch has surged in New England / Mid-Atlantic Coast: up 22× on the route-weighted index since 1968.

House Finch In New England / Mid-Atlantic Coast Population Forecast

If the recent trend holds, House Finch in New England / Mid-Atlantic Coast is projected to rise about 39% by 2029 — from 9.3 in 2024 to a central estimate of 13 (95% range 0.00–26). A 5-year backtest shows a typical error of ±65.7%, with 100% of held-out values landing inside the 95% band.

+39%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 →
13Projected 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 →
0.00–2695% 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 →
±65.7%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, House Finch in New England / Mid-Atlantic Coast is projected to rise about 39% by 2029 — from 9.3 in 2024 to a central estimate of 13 (95% range 0.00–26). A 5-year backtest shows a typical error of ±65.7%, 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 →
2025120.0026
2026130.0026
2027130.0026
2028130.0026
2029130.0026

Routes In New England / Mid-Atlantic Coast

Routes recording House Finch 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 →
Sachuest PtRHODE-ISLAND571990
UncasvilleCONNECTICUT492024
E PepperellMASSACHUSETTS431994
Island CreekMARYLAND372024
DoverNEW-HAMPSHIRE352024
HarringtonDELAWARE342024
JonesMARYLAND341994
St. George'S IslandMARYLAND342017
Fair HillMARYLAND341996
Pedricktown 2NEW-JERSEY332024
BrocktonMASSACHUSETTS292019
HolmansvilleNEW-JERSEY282009
WillimanticCONNECTICUT252018
ChilmarkMASSACHUSETTS241983
PedricktownNEW-JERSEY242012
Bethany BchDELAWARE231990
WellfleetMASSACHUSETTS232007
Severna ParkMARYLAND222011
MaynardMASSACHUSETTS222022
New BedfordNEW-JERSEY222024
ManorvilleNEW-YORK222024
E HartlandCONNECTICUT211992
Broomes IslMARYLAND211996
Woodbury HgtNEW-JERSEY212024
Kittery PtMAINE202024

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