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

Cassin's Finch In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Cassin's Finch in Southern Rockies / Colorado Plateau has surged: up 389% on the route-weighted index since 1970.

+389%Since 1970
136Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Cassin's Finch has surged in Southern Rockies / Colorado Plateau: up 389% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Cassin's Finch in Southern Rockies / Colorado Plateau is projected to rise about 64% by 2029 — from 0.90 in 2024 to a central estimate of 1.5 (95% range 0.11–2.8). A 5-year backtest shows a typical error of ±74.6%, with 100% of held-out values landing inside the 95% band.

+64%Change by 2029
1.5Projected 2029 index
0.11–2.895% range
±74.6%Backtest error
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 index95% low95% high
20251.40.062.8
20261.40.072.8
20271.50.092.8
20281.50.102.8
20291.50.112.8

Routes In Southern Rockies / Colorado Plateau

Routes recording Cassin's Finch in Southern Rockies / Colorado Plateau.
Deadman Rd.COLORADO162024
Uintah NfUTAH151994
Red Spur Mtn.UTAH152023
Buffalo ParkCOLORADO142023
BeckUTAH141987
Grizzly RdgeUTAH142024
CastletonUTAH121977
Ryan ParkWYOMING92023
Cortez 2COLORADO82014
Bryce CanyonUTAH82024
Pinos CreekCOLORADO61990
Blackhead PkCOLORADO62021
PowderhornCOLORADO62023
Wasatch NfUTAH62024
NotomUTAH61989
Canyon RimsUTAH62018
ParlinCOLORADO52018
CastletonCOLORADO52024
Colona 2COLORADO52018
SummitvilleCOLORADO52012
Owl Creek PassCOLORADO52024
RichfieldUTAH52019
GooseberryUTAH52024
UncompahgreCOLORADO42024
Mcphee Res.COLORADO42024

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