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Species · Massachusetts · BBS 2025 Release · 1966–2024

Belted Kingfisher Population Trend in Massachusetts

All statesGeneralists

Belted Kingfisher in Massachusetts has declined: down 31% on the route-weighted index since 1969.

-31%Since 1969TrendPercent 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 →
32Routes 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 →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Belted Kingfisher Trends in MassachusettsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Belted Kingfisher in Massachusetts. See the full index history below.

Belted Kingfisher Population Forecast in Massachusetts

If the recent trend holds, Belted Kingfisher in Massachusetts is projected to fall about 64% by 2028 — from 0.39 in 2023 to a central estimate of 0.14 (95% range 0.00–0.37). A 5-year backtest shows a typical error of ±29.1%, with 80% of held-out values landing inside the 95% band.

-64%Change by 2028TrendPercent 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 →
0.14Projected 2028 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.3795% 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 →
±29.1%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, Belted Kingfisher in Massachusetts is projected to fall about 64% by 2028 — from 0.39 in 2023 to a central estimate of 0.14 (95% range 0.00–0.37). A 5-year backtest shows a typical error of ±29.1%, with 80% of held-out values landing inside the 95% band.19662028
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 →
20240.150.000.38
20250.150.000.38
20260.140.000.37
20270.140.000.37
20280.140.000.37

Belted Kingfisher Survey Routes in Massachusetts

Routes recording Belted Kingfisher in Massachusetts.
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 →
N Oxford220181968
Princeton219761973
Cape Cod Ns219991999
N. Andover220232003
E Dennis120151974
Chilmark119801973
Marion120221976
Wellfleet119891966
Prattville120082008
Brockton120171985
Newburyport120101970
Maynard120161970
Littleton120191972
Mansfield120001978
E Pepperell119941968
Belchertown120161968
Warren120071974
S Barre120231979
N Orange120151968
Cummington120111974
Chesterfield119991971
Cheshire119911970
Pittsfield120161970
Sheffield120131973
Monterey120212021

Belted Kingfisher Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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