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

Franklin's Gull Population Trend in Oregon

All statesWetland birds

Franklin's Gull in Oregon has declined: down 30% on the route-weighted index since 1977.

-30%Since 1977
12Routes In State
34Years

Notable Franklin's Gull Trends in Oregon

No notable trend signals for Franklin's Gull in Oregon. See the full index history below.

Franklin's Gull Population Forecast in Oregon

If the recent trend holds, Franklin's Gull in Oregon is projected to stay roughly flat through 2029, near 1.9 (95% range 0.00–7.9). A 5-year backtest shows a typical error of ±2076.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
1.9Projected 2029 index
0.00–7.995% range
±2076.8%Backtest error
19722029
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
20251.80.007.8
20261.90.007.9
20271.90.007.9
20281.90.007.9
20291.90.007.9

Franklin's Gull Survey Routes in Oregon

Routes recording Franklin's Gull in Oregon.
Harney Lake7520221993
Malheur Nwr3220221988
Princeton1319851972
Modoc Point1320092009
Lakeview1120222022
Fish Lake620221986
Warner Vally520232004
Catlow Rim320242014
Chinchalo320162015
Blizzard Gap220231997
Crane220211995
Fandango Can120162016

Franklin's Gull Population Trend in Other States

californiaidahokansasminnesotamontananebraskanorth-dakotasouth-dakotautahwyoming

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