Guild
Generalists
26 species tracked. As a group, generalists are -66%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 →
guild collapsecomputed 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 →
Generalists as a group have fallen sharply in surveyed states, down 66% since 1968.
Generalists Population Forecast
If the recent trend holds, Generalists as a group is projected to fall about 43% by 2030 — from 6.2 in 2025 to a central estimate of 3.5 (95% range 0.00–7.3). A 5-year backtest shows a typical error of ±34.8%, with 100% of held-out values landing inside the 95% band.
3.5Projected 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 →
Generalists By State
| 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 → | ||
|---|---|---|
| Virginia | -77% | 11 |
| West Virginia | -75% | 11 |
| Illinois | -69% | 12 |
| Idaho | -67% | 12 |
| Mississippi | -66% | 12 |
| Missouri | -66% | 12 |
| Maine | -63% | 10 |
| Massachusetts | -63% | 11 |
| South Carolina | -63% | 12 |
| Louisiana | -62% | 15 |
| New Jersey | -62% | 11 |
| Kentucky | -61% | 11 |
| Michigan | -60% | 11 |
| Maryland | -58% | 11 |
| Alabama | -58% | 13 |
| Connecticut | -57% | 11 |
| North Carolina | -57% | 12 |
| Ohio | -57% | 9 |
| Indiana | -56% | 10 |
| Arkansas | -56% | 11 |
| Iowa | -55% | 11 |
| Vermont | -55% | 10 |
| Pennsylvania | -54% | 11 |
| Tennessee | -54% | 12 |
| Wisconsin | -53% | 11 |
| Minnesota | -52% | 12 |
| New Hampshire | -52% | 11 |
| Kansas | -49% | 13 |
| New York | -48% | 11 |
| Texas | -47% | 18 |
| Georgia | -47% | 12 |
| Colorado | -41% | 14 |
| Florida | -41% | 15 |
| Nebraska | -38% | 12 |
| Arizona | -36% | 16 |
| Oklahoma | -36% | 15 |
| Alaska | -36% | 6 |
| Oregon | -34% | 11 |
| Rhode Island | -34% | 9 |
| California | -29% | 16 |
| South Dakota | -29% | 12 |
| Utah | -23% | 13 |
| Delaware | -21% | 10 |
| New Mexico | -20% | 17 |
| Wyoming | -14% | 13 |
| Washington | -5% | 11 |
| Montana | -1% | 13 |
| Nevada | +38% | 12 |
| North Dakota | +62% | 12 |