Guild
Generalists
26 species tracked. As a group, generalists are -67% since 1968.
Guild Signals
guild collapsecomputed index
Generalists as a group have fallen sharply in surveyed states, down 67% since 1968.
Forecast
If the recent trend holds, Generalists as a group is projected to fall about 46% by 2029 — from 6.6 in 2024 to a central estimate of 3.6 (95% range 0.00–7.3). A 5-year backtest shows a typical error of ±31.4%, with 100% of held-out values landing inside the 95% band.
-46%Change by 2029
3.6Projected 2029 index
0.00–7.395% range
±31.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 4.3 | 0.55 | 8.0 |
| 2026 | 4.1 | 0.37 | 7.9 |
| 2027 | 3.9 | 0.19 | 7.7 |
| 2028 | 3.8 | 0.01 | 7.5 |
| 2029 | 3.6 | 0.00 | 7.3 |
Generalists By State
| Virginia | -77% | 11 |
| West Virginia | -74% | 11 |
| Illinois | -70% | 12 |
| Idaho | -67% | 12 |
| Mississippi | -67% | 12 |
| Missouri | -64% | 12 |
| Kentucky | -63% | 11 |
| New Jersey | -63% | 11 |
| Massachusetts | -62% | 11 |
| Louisiana | -62% | 15 |
| Maine | -61% | 10 |
| South Carolina | -61% | 12 |
| Michigan | -61% | 11 |
| Alabama | -59% | 13 |
| Maryland | -59% | 11 |
| Indiana | -58% | 10 |
| Vermont | -58% | 10 |
| Connecticut | -57% | 11 |
| Tennessee | -57% | 12 |
| North Carolina | -56% | 12 |
| Ohio | -55% | 9 |
| Arkansas | -54% | 11 |
| Iowa | -54% | 11 |
| Minnesota | -54% | 12 |
| Pennsylvania | -54% | 11 |
| Wisconsin | -52% | 11 |
| Texas | -52% | 18 |
| New York | -50% | 11 |
| New Hampshire | -49% | 11 |
| Kansas | -48% | 12 |
| Georgia | -46% | 12 |
| Colorado | -43% | 14 |
| Nebraska | -42% | 12 |
| Florida | -42% | 15 |
| Oklahoma | -41% | 15 |
| Alaska | -36% | 6 |
| South Dakota | -34% | 12 |
| Arizona | -33% | 16 |
| Oregon | -32% | 11 |
| California | -32% | 16 |
| Rhode Island | -29% | 9 |
| Delaware | -28% | 10 |
| Utah | -21% | 13 |
| New Mexico | -16% | 17 |
| Wyoming | -12% | 13 |
| Montana | -5% | 13 |
| Washington | -5% | 11 |
| Nevada | +36% | 12 |
| North Dakota | +56% | 12 |
Member Species
| House Sparrow | Passeridae | -82% | 1968 |
| Common Grackle | Icteridae | -81% | 1968 |
| Spotted Dove | Columbidae | -74% | 1971 |
| European Starling | Sturnidae | -59% | 1968 |
| Common Ground Dove | Columbidae | -57% | 1968 |
| Rock Pigeon | Columbidae | -54% | 1968 |
| Northern Mockingbird | Mimidae | -48% | 1968 |
| Yellow-billed Magpie | Corvidae | -29% | 1970 |
| American Crow | Corvidae | -21% | 1968 |
| Brown-headed Cowbird | Icteridae | -11% | 1968 |
| Fish Crow | Corvidae | -8% | 1968 |
| Bronzed Cowbird | Icteridae | +5% | 1969 |
| Mourning Dove | Columbidae | +9% | 1968 |
| Chihuahuan Raven | Corvidae | +57% | 1969 |
| Inca Dove | Columbidae | +83% | 1969 |
| Brewer's Blackbird | Icteridae | +93% | 1968 |
| Black-billed Magpie | Corvidae | +142% | 1969 |
| White-winged Dove | Columbidae | +164% | 1969 |
| House Finch | Fringillidae | +501% | 1968 |
| Eurasian Tree Sparrow | Passeridae | +589% | 1969 |
| White-tipped Dove | Columbidae | +631% | 1974 |
| Common Raven | Corvidae | +829% | 1968 |
| Eurasian Collared-Dove | Columbidae | 178× | 1988 |
| Monk Parakeet | Psittacidae | n/a | n/a |
| Common Myna | Sturnidae | n/a | n/a |
| Shiny Cowbird | Icteridae | n/a | n/a |