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

Song Sparrow Population Trend in Maryland

All statesGeneralists

Song Sparrow in Maryland has increased: up 31% on the route-weighted index since 1968.

+31%Since 1968
75Routes In State
58Years

Notable Song Sparrow Trends in Maryland

No notable trend signals for Song Sparrow in Maryland. See the full index history below.

Song Sparrow Population Forecast in Maryland

If the recent trend holds, Song Sparrow in Maryland is projected to rise about 11% by 2029 — from 15 in 2024 to a central estimate of 16 (95% range 11–21). A 5-year backtest shows a typical error of ±10.5%, with 100% of held-out values landing inside the 95% band.

+11%Change by 2029
16Projected 2029 index
11–2195% range
±10.5%Backtest error
19662029
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
2025161121
2026161121
2027161121
2028161121
2029161121

Song Sparrow Survey Routes in Maryland

Routes recording Song Sparrow in Maryland.
Emmitsburg6420241966
Madonna5620222009
Earlton5320242014
Eklo4620181966
Largo4619811966
Finzel3920241995
Wheaton3920241990
Olney3820241966
Jennings3720241995
Silver Spg3519891966
Ijamsville3220241986
Mt Nebo2819911969
Pleasant Val2820241966
Potomac Park2720241970
Bachman Mill2720241966
La Plata2720091966
Williamsport2620241966
Warfieldsbrg2620241966
Floyd2420241966
Accident2220171992
Davidsnville2220241982
Norwood2120121966
Upper Xrds2120081966
Accident 22020242018
Fair Hill1919961992

Song Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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