BirdAnalyst
Species · BCR 22 · BBS 2025 Release · 1966–2024

Lark Sparrow In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieGrassland birds

Lark Sparrow in Eastern Tallgrass Prairie has surged: up 77% on the route-weighted index since 1968.

+77%Since 1968
177Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Lark Sparrow has surged in Eastern Tallgrass Prairie: up 77% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Lark Sparrow in Eastern Tallgrass Prairie is projected to stay roughly flat through 2029, near 1.1 (95% range 0.73–1.5). A 5-year backtest shows a typical error of ±12.5%, with 100% of held-out values landing inside the 95% band.

+3%Change by 2029
1.1Projected 2029 index
0.73–1.595% range
±12.5%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
20251.10.691.5
20261.10.701.5
20271.10.711.5
20281.10.721.5
20291.10.731.5

Routes In Eastern Tallgrass Prairie

Routes recording Lark Sparrow in Eastern Tallgrass Prairie.
WrefordKANSAS262024
LincolnvilleKANSAS162024
NorborneMISSOURI122023
Trading PostKANSAS102024
PiersonIOWA92014
McfallMISSOURI92024
MurdockNEBRASKA92024
WainwrightOKLAHOMA92013
WashtaIOWA82014
LyonsNEBRASKA82024
KeetonvilleOKLAHOMA82022
GalesburgKANSAS72024
HumboldtKANSAS72022
DoverKANSAS72022
FrazierMISSOURI72024
New PointMISSOURI72024
EmdenMISSOURI72024
BucyrusKANSAS62024
MoreheadKANSAS62024
BarclayKANSAS52024
SenecaKANSAS52022
ReeceKANSAS52024
Le LoupKANSAS52021
ClarksdaleILLINOIS41971
PrairieburgIOWA41980

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