Table 2.
Models of raven abundance across the Northern Range from 2009 through 2017 considering location inside or outside Yellowstone National Park and the best variables describing weather conditions (the average snowpack per March day) and wolf presence (the biomass provided by wolf‐acquired carcasses per March day)
| Model of Raven Abundance | K | AICc | ∆AICc | wi |
|---|---|---|---|---|
| Location + Snow + Biomass + Location*Snow + Location*Biomass | 6 | 379.19 | 0.00 | 1.00 |
| Location + Snow + Biomass + Location*Snow | 5 | 449.86 | 70.66 | <0.001 |
| Location + Snow + Location*Snow | 4 | 458.29 | 79.10 | <0.001 |
| Location + Snow + Biomass + Location*Biomass | 5 | 582.68 | 203.49 | <0.001 |
| Location + Snow + Biomass | 4 | 630.72 | 251.53 | <0.001 |
| Location + Snow | 3 | 635.29 | 256.10 | <0.001 |
| Average Snowpack | 2 | 636.63 | 257.44 | <0.001 |
| Location + Biomass + Location*Biomass | 4 | 668.82 | 289.63 | <0.001 |
| Location + Biomass | 3 | 720.96 | 341.77 | <0.001 |
| Prey Biomass | 2 | 722.30 | 343.11 | <0.001 |
| Survey Location | 2 | 806.47 | 427.28 | <0.001 |
| Null | 1 | 808.17 | 428.98 | <0.001 |