BirdAnalyst
Species · BCR 2 · BBS 2025 Release · 1966–2024

Rock Ptarmigan In BCR 2

All regionsBCR 2Generalists

Rock Ptarmigan in BCR 2 has edged up: up 23% on the route-weighted index since 1997.

+23%Since 1997
6Routes In Region
21Years

Notable Signals

No notable trend signals for Rock Ptarmigan in BCR 2. See the full index history below.

Forecast

If the recent trend holds, Rock Ptarmigan in BCR 2 is projected to rise about 139% by 2029 — from 0.33 in 2024 to a central estimate of 0.80 (95% range 0.00–1.8). A 5-year backtest shows a typical error of ±426.1%, with 40% of held-out values landing inside the 95% band.

+139%Change by 2029
0.80Projected 2029 index
0.00–1.895% range
±426.1%Backtest error
19932029
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
20250.760.001.8
20260.770.001.8
20270.780.001.8
20280.790.001.8
20290.800.001.8

Routes In BCR 2

Routes recording Rock Ptarmigan in BCR 2.
TellerALASKA22024
ChiniakALASKA12008
Cold BayALASKA12022
CouncilALASKA12015
NomeALASKA12012
Salmon LakeALASKA12024

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