Family · Corvidae · Passeriformes
Crows, Jays & Magpies Population Trends
16 species tracked, ordered by long-term trend. Steepest declines first.
| 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 → | Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology → | History | ||
|---|---|---|---|---|
| Florida Scrub-Jay | Forest birds | -83% | 1968 | |
| Blue Jay | Forest birds | -48% | 1968 | |
| Pinyon Jay | Forest birds | -43% | 1970 | |
| Yellow-billed Magpie | Generalists | -29% | 1970 | |
| American Crow | Generalists | -21% | 1968 | |
| Fish Crow | Generalists | -8% | 1968 | |
| Woodhouse's Scrub-Jay | Forest birds | +4% | 1970 | |
| Mexican Jay | Forest birds | +12% | 1970 | |
| California Scrub-Jay | Forest birds | +13% | 1970 | |
| Chihuahuan Raven | Generalists | +57% | 1969 | |
| Steller's Jay | Forest birds | +111% | 1970 | |
| Black-billed Magpie | Generalists | +142% | 1969 | |
| Clark's Nutcracker | Forest birds | +210% | 1970 | |
| Canada Jay | Forest birds | +624% | 1969 | |
| Green Jay | Forest birds | +642% | 1970 | |
| Common Raven | Generalists | +829% | 1968 |