BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

Lark Bunting In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGrassland birds

Lark Bunting in Southern Rockies / Colorado Plateau has collapsed: down 98% on the route-weighted index since 1970.

-98%Since 1970
45Routes In Region
55Years

Notable Signals

long arc declinecomputed index

Lark Bunting has collapsed in Southern Rockies / Colorado Plateau: down 98% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Lark Bunting in Southern Rockies / Colorado Plateau is projected to fall about 100% by 2029 — from 0.10 in 2024 to a central estimate of 0.00 (95% range 0.00–3.7). A 5-year backtest shows a typical error of ±5228.8%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–3.795% range
±5228.8%Backtest error
19682029
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
20250.000.003.7
20260.000.003.7
20270.000.003.7
20280.000.003.7
20290.000.003.7

Routes In Southern Rockies / Colorado Plateau

Routes recording Lark Bunting in Southern Rockies / Colorado Plateau.
AlamosaCOLORADO102015
WestcliffeCOLORADO82012
Wet Mtns.COLORADO71994
Sybille CynWYOMING72024
Douglas PassCOLORADO61982
Mt TrumbullARIZONA51978
San LuisCOLORADO52007
AntonitoCOLORADO52004
MesitaCOLORADO52024
Red Spur Mtn.UTAH52004
MoscaCOLORADO42017
PasturaNEW-MEXICO42015
Gallo ArroyoNEW-MEXICO42007
Cane Spr DesUTAH41992
BrookhurstWYOMING42022
WarbonnetWYOMING42017
BufordCOLORADO31992
Blackhead PkCOLORADO31994
NotomUTAH32023
WestwaterUTAH32011
Gribbles PrkCOLORADO21997
TorreonNEW-MEXICO21975
AztecNEW-MEXICO21988
M Warner ResUTAH22022
Round RockARIZONA11969

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