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

Marsh Wren Population Trend in Arizona

All statesForest birds

Marsh Wren in Arizona has edged down: down 10% on the route-weighted index since 1994.

-10%Since 1994
4Routes In State
26Years

Notable Marsh Wren Trends in Arizona

No notable trend signals for Marsh Wren in Arizona. See the full index history below.

Marsh Wren Population Forecast in Arizona

If the recent trend holds, Marsh Wren in Arizona is projected to stay roughly flat through 2029, near 0.06 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±43.5%, with 100% of held-out values landing inside the 95% band.

-2%Change by 2029
0.06Projected 2029 index
0.00–0.1695% range
±43.5%Backtest error
19822029
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
20250.060.000.17
20260.060.000.16
20270.060.000.16
20280.060.000.16
20290.060.000.16

Marsh Wren Survey Routes in Arizona

Routes recording Marsh Wren in Arizona.
Cibola Lake320211994
Laguna220091982
Araby220231992
Carr Mtn220242016

Marsh Wren Population Trend in Other States

alabamacaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaslouisianamainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatexasutahvermontvirginiawashingtonwisconsinwyoming

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