BirdAnalyst
Species · BCR 15 · BBS 2025 Release · 1966–2024

Cassin's Finch In Sierra Nevada

All regionsSierra NevadaGeneralists

Cassin's Finch in Sierra Nevada has increased: up 41% on the route-weighted index since 1970.

+41%Since 1970
33Routes In Region
56Years

Notable Signals

No notable trend signals for Cassin's Finch in Sierra Nevada. See the full index history below.

Forecast

If the recent trend holds, Cassin's Finch in Sierra Nevada is projected to rise about 120% by 2029 — from 1.6 in 2024 to a central estimate of 3.6 (95% range 0.93–6.3). A 5-year backtest shows a typical error of ±84.2%, with 80% of held-out values landing inside the 95% band.

+120%Change by 2029
3.6Projected 2029 index
0.93–6.395% range
±84.2%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
20253.70.996.3
20263.60.986.3
20273.60.966.3
20283.60.946.3
20293.60.936.3

Routes In Sierra Nevada

Routes recording Cassin's Finch in Sierra Nevada.
ChilcootCALIFORNIA112024
GoumazCALIFORNIA102011
Last ChanceCALIFORNIA102019
Tahoe NfCALIFORNIA91994
DardanelleCALIFORNIA72019
Little TruckeeCALIFORNIA72023
CrestviewCALIFORNIA72024
Lassen ParkCALIFORNIA61989
WoodfordsCALIFORNIA52024
Kings CanyonCALIFORNIA51972
Pine MountainCALIFORNIA52017
SattleyCALIFORNIA42017
RivertonCALIFORNIA42022
ChesterCALIFORNIA42017
PlacervilleCALIFORNIA41999
WestvilleCALIFORNIA32021
JohnsvilleCALIFORNIA32023
Hat CreekCALIFORNIA32018
LakeshoreCALIFORNIA32024
Chaos CraterCALIFORNIA32019
Meadow ValleyCALIFORNIA32023
LumberyardCALIFORNIA22024
Butte MeadowCALIFORNIA22014
PaxtonCALIFORNIA22010
Eagle LakeCALIFORNIA12024

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