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

Swamp Sparrow Population Trend in Minnesota

All statesGeneralists

Swamp Sparrow in Minnesota has surged: up 191% on the route-weighted index since 1969.

+191%Since 1969
85Routes In State
57Years

Notable Swamp Sparrow Trends in Minnesota

long arc increasecomputed index

Swamp Sparrow has surged in Minnesota: up 191% on the route-weighted index since 1969.

Swamp Sparrow Population Forecast in Minnesota

If the recent trend holds, Swamp Sparrow in Minnesota is projected to stay roughly flat through 2029, near 5.8 (95% range 4.5–7.0). A 5-year backtest shows a typical error of ±7.3%, with 100% of held-out values landing inside the 95% band.

-7%Change by 2029
5.8Projected 2029 index
4.5–7.095% range
±7.3%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
20255.54.26.7
20265.54.36.8
20275.64.46.8
20285.74.46.9
20295.84.57.0

Swamp Sparrow Survey Routes in Minnesota

Routes recording Swamp Sparrow in Minnesota.
Glendale3820241993
Sherburne Nr2720241990
Crane Lake2320241969
Waskish2220241978
Wigwam Bay2120231967
Brook Park1720241998
Mahtowa1620231993
Red Lake1620241993
Mille Lacs1520241967
Minnetonka1420241972
Lake Bronson1420111998
Sawbill Camp1420241993
Hart Lake1320241967
Sherry Lake1320221969
Bigfork1320241993
Evergreen1220241968
Ashby1220211997
Jordan1220231993
Cromwell1020241967
Tracy1020242004
Babbitt1020231994
Chisholm1020242019
Blackduck920222004
Knapp820241967
Edwards820061975

Swamp Sparrow Population Trend in Other States

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

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