BirdAnalyst
Species · Washington · BBS 2025 Release · 1966–2024

Ruby-crowned Kinglet Population Trend in Washington

All statesForest birds

Ruby-crowned Kinglet in Washington has risen sharply: up 72% on the route-weighted index since 1971.

+72%Since 1971
48Routes In State
55Years

Notable Ruby-crowned Kinglet Trends in Washington

long arc increasecomputed index

Ruby-crowned Kinglet has risen sharply in Washington: up 72% on the route-weighted index since 1971.

Ruby-crowned Kinglet Population Forecast in Washington

If the recent trend holds, Ruby-crowned Kinglet in Washington is projected to stay roughly flat through 2029, near 0.75 (95% range 0.17–1.3). A 5-year backtest shows a typical error of ±134.9%, with 60% of held-out values landing inside the 95% band.

+4%Change by 2029
0.75Projected 2029 index
0.17–1.395% range
±134.9%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
20250.720.141.3
20260.730.151.3
20270.740.161.3
20280.740.171.3
20290.750.171.3

Ruby-crowned Kinglet Survey Routes in Washington

Routes recording Ruby-crowned Kinglet in Washington.
Cloverland2820241993
Spring Lake720241982
Lake Chelan720191989
Issaquah619771977
Keller419951969
Everett419951977
Carlton420221992
Omak Creek420241996
Chewelah320121978
Nighthawk319921992
Curlew320131993
Ardenvoir219721969
Mendota 2219931990
Reardan219691969
Rimrock219691969
Asotin220241987
Leavenworth219811981
Mendota219881988
Suiattle Riv220031994
Mazama220221993
Laurier220161997
Northport220181996
Port Angeles119961996
Twisp120142014
Montesand119921988

Ruby-crowned Kinglet Population Trend in Other States

alaskaarizonacaliforniacoloradoidahomainemichiganminnesotamontananevadanew-hampshirenew-mexiconew-yorkoregonsouth-dakotautahvermontwisconsinwyoming

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