BirdAnalyst
Guild · Rhode Island · BBS 2026 Release · 1966–2025

Generalists In Rhode Island

All statesRhode Island

9 species in this guild. As a group they are -34%Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → since 1968.

Guild SignalsNotable 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 generalists in Rhode Island. See the full index history below.

Generalists In Rhode Island Population Forecast

If the recent trend holds, Generalists in Rhode Island is projected to rise about 57% by 2030 — from 13 in 2025 to a central estimate of 20 (95% range 0.00–43). A 5-year backtest shows a typical error of ±78.7%, with 100% of held-out values landing inside the 95% band.

+57%Change 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 →
20Projected 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 →
0.00–4395% 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 →
±78.7%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, Generalists in Rhode Island is projected to rise about 57% by 2030 — from 13 in 2025 to a central estimate of 20 (95% range 0.00–43). A 5-year backtest shows a typical error of ±78.7%, with 100% of held-out values landing inside the 95% band.19662030
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 →
2026210.0044
2027200.0044
2028200.0043
2029200.0043
2030200.0043

Member Species In Rhode Island

Generalists species in Rhode Island.
TrendPercent 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 →
Northern MockingbirdMimidae-73%
Rock PigeonColumbidae-73%
European StarlingSturnidae-67%
Common GrackleIcteridae-37%
American CrowCorvidae+21%
House SparrowPasseridae+102%
Brown-headed CowbirdIcteridae+154%
House FinchFringillidae+238%
Mourning DoveColumbidae+273%

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