BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Lark Sparrow In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionGrassland birds

Lark Sparrow in Prairie Hardwood Transition has surged: up 91% on the route-weighted index since 1972.

+91%Since 1972
22Routes In Region
41Years

Notable Signals

long arc increasecomputed index

Lark Sparrow has surged in Prairie Hardwood Transition: up 91% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Lark Sparrow in Prairie Hardwood Transition is projected to fall about 21% by 2029 — from 0.10 in 2024 to a central estimate of 0.08 (95% range 0.02–0.13). A 5-year backtest shows a typical error of ±76.8%, with 100% of held-out values landing inside the 95% band.

-21%Change by 2029
0.08Projected 2029 index
0.02–0.1395% range
±76.8%Backtest error
19702029
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
20250.070.020.13
20260.070.020.13
20270.070.020.13
20280.070.020.13
20290.080.020.13

Routes In Prairie Hardwood Transition

Routes recording Lark Sparrow in Prairie Hardwood Transition.
MerideanWISCONSIN32024
KnoxINDIANA22023
New LondonMINNESOTA22000
LimestoneOHIO22015
HatfieldWISCONSIN21979
N FreedomWISCONSIN22024
PrincetonWISCONSIN22014
Fall RiverWISCONSIN22024
Prairie Du ChienWISCONSIN22014
BriggsvilleWISCONSIN22024
BeloitWISCONSIN22009
Money CreekMINNESOTA12018
MillvilleMINNESOTA12007
PrincetonMINNESOTA12021
EdwardsMINNESOTA12017
GlenwoodMINNESOTA11994
Sherburne NrMINNESOTA12024
CumberlandWISCONSIN12013
TrempealeauWISCONSIN12018
CadottWISCONSIN12011
Oconto FallsWISCONSIN11990
Buena VistaWISCONSIN12022

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