BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

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 →
205Routes 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 →
56YearsYears 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 35% by 2029 — from 5.7 in 2024 to a central estimate of 3.7 (95% range 0.50–6.9). A 5-year backtest shows a typical error of ±19%, with 100% of held-out values landing inside the 95% band.

-35%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 →
3.7Projected 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 →
0.50–6.995% 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 →
±19%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 35% by 2029 — from 5.7 in 2024 to a central estimate of 3.7 (95% range 0.50–6.9). A 5-year backtest shows a typical error of ±19%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20253.90.677.0
20263.80.637.0
20273.80.596.9
20283.70.546.9
20293.70.506.9

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 →
AnethUTAH792024
La CienegaNEW-MEXICO752022
CanyonlandsUTAH732006
MoabUTAH652024
MountainairNEW-MEXICO592024
YampaiARIZONA571977
Peach SpringARIZONA412024
La Plata 2NEW-MEXICO402016
The GapARIZONA381976
La PlataNEW-MEXICO372013
Black MesaARIZONA341995
NageesiNEW-MEXICO302024
Moquith MtnUTAH282024
Fox ParkWYOMING261996
FruitaCOLORADO252007
RosevaleCOLORADO252024
TorreonNEW-MEXICO252024
CrownpointNEW-MEXICO231996
Claunch 2NEW-MEXICO232024
AztecNEW-MEXICO221989
CortezCOLORADO212008
AngoraCOLORADO212024
HiteUTAH202023
ShivwitzUTAH202024
KamasUTAH192024

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