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

Swamp Sparrow Population Trend in Nebraska

All statesGeneralists

Swamp Sparrow in Nebraska has surged: up 124% on the route-weighted index since 1980.

+124%Since 1980
3Routes In State
30Years

Notable Swamp Sparrow Trends in Nebraska

long arc increasecomputed index

Swamp Sparrow has surged in Nebraska: up 124% on the route-weighted index since 1980.

Swamp Sparrow Population Forecast in Nebraska

If the recent trend holds, Swamp Sparrow in Nebraska is projected to rise about 111% by 2029 — from 0.08 in 2024 to a central estimate of 0.17 (95% range 0.00–0.39). A 5-year backtest shows a typical error of ±185.1%, with 100% of held-out values landing inside the 95% band.

+111%Change by 2029
0.17Projected 2029 index
0.00–0.3995% range
±185.1%Backtest error
19752029
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
20250.170.000.39
20260.170.000.39
20270.170.000.39
20280.170.000.39
20290.170.000.39

Swamp Sparrow Survey Routes in Nebraska

Routes recording Swamp Sparrow in Nebraska.
Sparta420211975
Wheeler Co220241990
Nenzel220242022

Swamp Sparrow Population Trend in Other States

connecticutdelawareillinoisindianaiowamainemarylandmassachusettsmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-dakotaohiopennsylvaniarhode-islandsouth-dakotavermontvirginiawest-virginiawisconsin

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