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

Wilson's Phalarope In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauShorebirds

Wilson's Phalarope in Southern Rockies / Colorado Plateau has collapsed: down 80% on the route-weighted index since 1970.

-80%Since 1970
32Routes In Region
50Years

Notable Signals

long arc declinecomputed index

Wilson's Phalarope has collapsed in Southern Rockies / Colorado Plateau: down 80% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Wilson's Phalarope in Southern Rockies / Colorado Plateau is projected to stay roughly flat through 2028, near 0.14 (95% range 0.00–0.79). A 5-year backtest shows a typical error of ±638.5%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028
0.14Projected 2028 index
0.00–0.7995% range
±638.5%Backtest error
19682028
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
20240.160.000.80
20250.150.000.80
20260.150.000.80
20270.150.000.79
20280.140.000.79

Routes In Southern Rockies / Colorado Plateau

Routes recording Wilson's Phalarope in Southern Rockies / Colorado Plateau.
AlamosaCOLORADO62023
SoapstoneUTAH52001
ParlinCOLORADO41989
Stillwater PassCOLORADO42003
BufordCOLORADO32009
DoylevilleCOLORADO32005
BrookhurstWYOMING32016
CortezCOLORADO21997
Rio Grnds RsCOLORADO21992
PowderhornCOLORADO21995
Fence LakeNEW-MEXICO22016
Heber Mtn.UTAH22016
VernalUTAH22018
Wellington 2UTAH22009
WarbonnetWYOMING22005
Sybille CynWYOMING22015
ColonaCOLORADO11988
MoffatCOLORADO12021
DoloresCOLORADO11985
Wray GulchCOLORADO11991
Wilson CreekCOLORADO12011
WaldenCOLORADO12019
Lost LakeCOLORADO12002
TarryallCOLORADO12013
CastletonCOLORADO12005

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