BirdAnalyst
Species · BCR 16 · BBS 2026 Release · 1966–2025

House Finch In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

House Finch in Southern Rockies / Colorado Plateau has declined: down 29% on the route-weighted index since 1970.

-29%Since 1970TrendPercent 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 →
207Routes 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 →
57YearsYears 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 House Finch in Southern Rockies / Colorado Plateau. See the full index history below.

House Finch In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, House Finch in Southern Rockies / Colorado Plateau is projected to fall about 24% by 2030 — from 4.9 in 2025 to a central estimate of 3.7 (95% range 0.56–6.9). A 5-year backtest shows a typical error of ±23.2%, with 100% of held-out values landing inside the 95% band.

-24%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 →
3.7Projected 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 →
0.56–6.995% 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 →
±23.2%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 Southern Rockies / Colorado Plateau is projected to fall about 24% by 2030 — from 4.9 in 2025 to a central estimate of 3.7 (95% range 0.56–6.9). A 5-year backtest shows a typical error of ±23.2%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20263.90.727.0
20273.80.687.0
20283.80.647.0
20293.80.606.9
20303.70.566.9

Routes In Southern Rockies / Colorado Plateau

Routes recording House Finch in Southern Rockies / Colorado Plateau.
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 →
La CienegaNEW-MEXICO752022
CanyonlandsUTAH732006
MountainairNEW-MEXICO592024
YampaiARIZONA571977
HarmonyCOLORADO532025
RosevaleCOLORADO452025
AnethUTAH452025
MoabUTAH412025
La Plata 2NEW-MEXICO402016
Peach SpringARIZONA392025
The GapARIZONA381976
La PlataNEW-MEXICO372013
Black MesaARIZONA341995
McgaffeyNEW-MEXICO302025
TorreonNEW-MEXICO262025
ShivwitzUTAH262025
Fox ParkWYOMING261996
FruitaCOLORADO252007
Claunch 2NEW-MEXICO242025
EscalanteUTAH242025
CrownpointNEW-MEXICO231996
AztecNEW-MEXICO221989
CortezCOLORADO212008
AngoraCOLORADO192025
NageesiNEW-MEXICO182025

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