Table 2. Logistic exposure models of gray vireo daily nest survival probabilities.
| Model | K | ΔAICc | ωi | Deviance |
|---|---|---|---|---|
| aFolDen * DistEdg | 5 | 0 | 0.08 | 197.2 |
| FolDen * DistEdg + NestHt * TrHtavg | 8 | 0.6 | 0.06 | 191.5 |
| FolDen * DistEdg + NestHt | 6 | 0.7 | 0.06 | 195.8 |
| FolDen * DistEdg + JunCt + JunCt2 | 7 | 1.2 | 0.05 | 194.2 |
| FolDen * DistEdg + NeTrHt | 5 | 1.3 | 0.05 | 196.4 |
| FolDen * DistEdg + JunCt + JunCt2 + NeTrHt | 8 | 1.7 | 0.04 | 192.6 |
| FolDen * DistEdg + TrHtavg | 6 | 1.9 | 0.03 | 197.0 |
| Null model | 2 | 13.0 | 0.00 | 216.3 |
Notes:
AICc value of 207.2.
Covariate descriptions: FolDen, foliage density of the nesting tree; DistEdg, distance of the nest from the edge of the nesting tree; NestHt, nest height; FolDenavg, the average foliage density of junipers in the nesting plot; TrHtavg, the average height of trees in the nesting plot; JunCt, juniper count in the nesting plot; NeTrHt, nest tree height. Relative model performance was evaluated using Akaike Information Criterion corrected for small sample sizes (AICc), AICc weight (ωi), and Deviance as a goodness-of-fit metric. K is the number of parameters in the model, including an error term and a random intercept. Models were formed from 89 nests found from 2016–2018 on Kirtland Air Force Base in Albuquerque, New Mexico, USA. Only models with ΔAICc ≤ 2.0 and a null model are included.