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

Ruby-crowned Kinglet In BCR 2

All regionsBCR 2Forest birds

Ruby-crowned Kinglet in BCR 2 has fallen sharply: down 61% on the route-weighted index since 1993.

-61%Since 1993
7Routes In Region
26Years

Notable Signals

long arc declinecomputed index

Ruby-crowned Kinglet has fallen sharply in BCR 2: down 61% on the route-weighted index since 1993.

Forecast

If the recent trend holds, Ruby-crowned Kinglet in BCR 2 is projected to rise about 70% by 2027 — from 0.29 in 2022 to a central estimate of 0.49 (95% range 0.00–4.6). A 5-year backtest shows a typical error of ±163.1%, with 100% of held-out values landing inside the 95% band.

+70%Change by 2027
0.49Projected 2027 index
0.00–4.695% range
±163.1%Backtest error
19842027
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
20230.670.004.8
20240.620.004.8
20250.580.004.7
20260.530.004.7
20270.490.004.6

Routes In BCR 2

Routes recording Ruby-crowned Kinglet in BCR 2.
Dillingham (Short)ALASKA331984
DillinghamALASKA292019
Katmai N.P.ALASKA22022
King SalmonALASKA12019
St. Mary'SALASKA11998
Gweek RiverALASKA12002
Selawik (Short)ALASKA11987

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