BirdAnalyst
Species · Nebraska · BBS 2025 Release · 1966–2024

Thick-billed Longspur Population Trend in Nebraska

All statesGeneralists

Thick-billed Longspur in Nebraska has collapsed: down 77% on the route-weighted index since 1993.

-77%Since 1993TrendPercent 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 →
4Routes 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 →
17YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Thick-billed Longspur Trends in NebraskaNotable 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 →

Thick-billed Longspur has collapsed in Nebraska: down 77% on the route-weighted index since 1993.

Thick-billed Longspur Survey Routes in Nebraska

Routes recording Thick-billed Longspur in Nebraska.
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 →
Agate1719991967
Oglala Nat. Grass.220142014
Kimball120151978
Agate 2120242008

Thick-billed Longspur Population Trend in Other States

coloradomontananorth-dakotawyoming

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