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

Woodhouse's Scrub-Jay In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Woodhouse's Scrub-Jay in Southern Rockies / Colorado Plateau has collapsed: down 75% on the route-weighted index since 1970.

-75%Since 1970
168Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Woodhouse's Scrub-Jay has collapsed in Southern Rockies / Colorado Plateau: down 75% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Woodhouse's Scrub-Jay in Southern Rockies / Colorado Plateau is projected to fall about 42% by 2029 — from 1.2 in 2024 to a central estimate of 0.72 (95% range 0.00–3.1). A 5-year backtest shows a typical error of ±35.3%, with 100% of held-out values landing inside the 95% band.

-42%Change by 2029
0.72Projected 2029 index
0.00–3.195% range
±35.3%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
20250.840.003.2
20260.810.003.2
20270.780.003.1
20280.750.003.1
20290.720.003.1

Routes In Southern Rockies / Colorado Plateau

Routes recording Woodhouse's Scrub-Jay in Southern Rockies / Colorado Plateau.
BonanzaUTAH422013
WalsenburgCOLORADO162024
Mesaverde NpCOLORADO162024
Moon LakeUTAH161994
La CienegaNEW-MEXICO142022
ClaunchNEW-MEXICO142000
LudlowCOLORADO132016
PecosNEW-MEXICO132017
Claunch 2NEW-MEXICO132024
Cortez 2COLORADO102017
AnimasCOLORADO92004
Main CanyonUTAH92024
ZeniffARIZONA81984
AngoraCOLORADO82024
Alton 2UTAH82022
Black MesaARIZONA71992
DeltaCOLORADO72021
Stinking Lk.NEW-MEXICO71999
Castle DaleUTAH72017
ShivwitzUTAH72024
Cow SpringsARIZONA62022
Mt TrumbullARIZONA51979
CokedaleCOLORADO52024
FayetteUTAH52021
GooseberryUTAH52024

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