BirdAnalyst
Guild · Rhode Island · BBS 2025 Release · 1966–2024

Grassland Birds In Rhode Island

All statesRhode Island

3 species in this guild. As a group they are +200%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 grassland birds in Rhode Island. See the full index history below.

Grassland Birds In Rhode Island Population Forecast

If the recent trend holds, Grassland birds in Rhode Island is projected to rise about 382% by 2015 — from 6.0 in 2010 to a central estimate of 29 (95% range 4.1–54). A 5-year backtest shows a typical error of ±303.8%, with 40% of held-out values landing inside the 95% band.

+382%Change by 2015TrendPercent 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 →
29Projected 2015 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
4.1–5495% 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 →
±303.8%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, Grassland birds in Rhode Island is projected to rise about 382% by 2015 — from 6.0 in 2010 to a central estimate of 29 (95% range 4.1–54). A 5-year backtest shows a typical error of ±303.8%, with 40% of held-out values landing inside the 95% band.19662015
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 →
2011271.751
2012272.352
2013282.953
2014283.553
2015294.154

Member Species In Rhode Island

Grassland birds 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 BobwhiteOdontophoridae-83%
Eastern MeadowlarkIcteridae-64%
Ring-necked PheasantPhasianidae+93%

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