Species · Arizona · BBS 2025 Release · 1966–2024
Cassin's Finch Population Trend in Arizona
Cassin's Finch in Arizona has collapsed: down 79% on the route-weighted index since 1992.
-79%Since 1992
7Routes In State
29Years
Notable Cassin's Finch Trends in Arizona
long arc declinecomputed index
Cassin's Finch has collapsed in Arizona: down 79% on the route-weighted index since 1992.
Cassin's Finch Population Forecast in Arizona
If the recent trend holds, Cassin's Finch in Arizona is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±67.5%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.04Projected 2029 index
0.00–0.1595% range
±67.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.05 | 0.00 | 0.15 |
| 2026 | 0.05 | 0.00 | 0.15 |
| 2027 | 0.05 | 0.00 | 0.15 |
| 2028 | 0.05 | 0.00 | 0.15 |
| 2029 | 0.04 | 0.00 | 0.15 |
Cassin's Finch Survey Routes in Arizona
| Tsaile | 2 | 2018 | 2017 |
| Pinetop | 1 | 1993 | 1993 |
| Sawmill | 1 | 2010 | 1988 |
| Happy Jack | 1 | 2002 | 2002 |
| Dry Park | 1 | 2024 | 1992 |
| Clay Spring | 1 | 1990 | 1990 |
| Greasewood | 1 | 2003 | 2003 |
Cassin's Finch Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.