BirdAnalyst
Species · New Mexico · BBS 2026 Release · 1966–2025

Yellow-billed Cuckoo Population Trend in New Mexico

All statesForest birds

Yellow-billed Cuckoo in New Mexico has collapsed: down 91% on the route-weighted index since 1970.

-91%Since 1970TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
20Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
41YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Yellow-billed Cuckoo Trends in New MexicoNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Yellow-billed Cuckoo has collapsed in New Mexico: down 91% on the route-weighted index since 1970.

Yellow-billed Cuckoo Population Forecast in New Mexico

If the recent trend holds, Yellow-billed Cuckoo in New Mexico is projected to stay roughly flat through 2030, near 0.00 (95% range 0.00–0.18). A 5-year backtest shows a typical error of ±295.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.00Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1895% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±295.8%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Yellow-billed Cuckoo in New Mexico is projected to stay roughly flat through 2030, near 0.00 (95% range 0.00–0.18). A 5-year backtest shows a typical error of ±295.8%, with 100% of held-out values landing inside the 95% band.19682030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20260.000.000.18
20270.000.000.18
20280.000.000.18
20290.000.000.18
20300.000.000.18

Yellow-billed Cuckoo Survey Routes in New Mexico

Routes recording Yellow-billed Cuckoo in New Mexico.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Cebolla120091973
Farley119801980
Grenville119841984
La Cienega119691969
Valencia119811968
Cooley Lake120251968
Floyd120181999
San Antonio119751975
Roswell120091968
Jornada120172017
Lakewood119941980
Variadero120182004
Laborcita120131995
Bitter Lake120091995
Pep120052005
Red Rock120161992
Mesilla120001992
Hobbs120011997
Sabinoso120211980
Logan120071977

Yellow-billed Cuckoo Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.