BirdAnalyst
Species · BCR 11 · BBS 2025 Release · 1966–2024

Trumpeter Swan In Prairie Potholes

All regionsPrairie PotholesWaterfowl

Trumpeter Swan in Prairie Potholes has surged: up 363% on the route-weighted index since 2010.

+363%Since 2010TrendPercent 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 →
14Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
16YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 increasecomputed 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 →

Trumpeter Swan has surged in Prairie Potholes: up 363% on the route-weighted index since 2010.

Routes In Prairie Potholes

Routes recording Trumpeter Swan in Prairie Potholes.
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 →
DawsonMINNESOTA62021
ArlingtonMINNESOTA42023
WylieMINNESOTA42023
WashingtonIOWA22024
ScrantonIOWA22023
BurchinalIOWA22023
CourtlandMINNESOTA22023
ChokioMINNESOTA22024
GlyndonMINNESOTA22024
TenneyMINNESOTA22015
BeltramiMINNESOTA22013
FairmontMINNESOTA22022
Lakota 2NORTH-DAKOTA22024
GluekMINNESOTA12014

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