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

Horned Lark Population Trend in Delaware

All statesGrassland birds

Horned Lark in Delaware has increased: up 46% on the route-weighted index since 1968.

+46%Since 1968
17Routes In State
58Years

Notable Horned Lark Trends in Delaware

No notable trend signals for Horned Lark in Delaware. See the full index history below.

Horned Lark Population Forecast in Delaware

If the recent trend holds, Horned Lark in Delaware is projected to rise about 15% by 2029 — from 10 in 2024 to a central estimate of 12 (95% range 6.2–17). A 5-year backtest shows a typical error of ±21.6%, with 100% of held-out values landing inside the 95% band.

+15%Change by 2029
12Projected 2029 index
6.2–1795% range
±21.6%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
2025115.717
2026115.917
2027126.017
2028126.117
2029126.217

Horned Lark Survey Routes in Delaware

Routes recording Horned Lark in Delaware.
Holleyville2220041966
Pepperbox2220161998
Harrington1820241966
Frankford1720121966
Frederica1620141966
Milton 21620172017
Holleyville 21320242006
Pepperbox 21020242017
Blackbird720241994
Mt Pleasant520191966
Dover519861966
Lowes Xrds419911966
Milton320161966
Millsboro320242017
Georgetown320221992
Wilmington120091967
Bethany Bch119901966

Horned Lark Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutgeorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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