BirdAnalyst
Species · BCR 11 · BBS 2025 Release · 1966–2024

Marsh Wren In Prairie Potholes

All regionsPrairie PotholesForest birds

Marsh Wren in Prairie Potholes has surged: up 584% on the route-weighted index since 1969.

+584%Since 1969
89Routes In Region
57Years

Notable Signals

long arc increasecomputed index

Marsh Wren has surged in Prairie Potholes: up 584% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Marsh Wren in Prairie Potholes is projected to stay roughly flat through 2029, near 10 (95% range 7.9–13). A 5-year backtest shows a typical error of ±9.2%, with 100% of held-out values landing inside the 95% band.

+9%Change by 2029
10Projected 2029 index
7.9–1395% range
±9.2%Backtest error
19672029
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
20259.77.212
20269.97.412
2027107.613
2028107.713
2029107.913

Routes In Prairie Potholes

Routes recording Marsh Wren in Prairie Potholes.
Horsehead LkNORTH-DAKOTA2162024
BuchananNORTH-DAKOTA732024
Sheyenne LkNORTH-DAKOTA722024
FormanNORTH-DAKOTA542024
LakotaNORTH-DAKOTA482009
Danzig 2NORTH-DAKOTA292024
DanzigNORTH-DAKOTA272013
WimbledonNORTH-DAKOTA262024
VeblenSOUTH-DAKOTA262023
EdgeleyNORTH-DAKOTA242024
MontpelierNORTH-DAKOTA222024
Big StoneMINNESOTA202012
BrittonSOUTH-DAKOTA202023
CooperstownNORTH-DAKOTA192024
ForbesSOUTH-DAKOTA192024
ReganNORTH-DAKOTA182022
Lakota 2NORTH-DAKOTA182024
BraddockNORTH-DAKOTA172022
Powers LakeNORTH-DAKOTA152024
RaymondSOUTH-DAKOTA152021
NilesNORTH-DAKOTA142023
TracyMINNESOTA112024
ChokioMINNESOTA102024
LoraineNORTH-DAKOTA92019
Turtle MtnsNORTH-DAKOTA82024

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