Table 3 Results of the GLM evaluating the effects of season, sex, and age on the presence of grit particles in the stomachs of hummingbirds
From: True grit: ingestion of small stone particles by hummingbirds in West Mexico
Explanatory variable | Estimate | Standard error | \(\chi_{1}^{2}\) | P-value |
|---|---|---|---|---|
Intercept | 1.85 | 0.78 | 10.39 | 0.001 |
Rainy season | − 0.68 | 0.87 | 1.10 | 0.290 |
Warm-dry season | 1.03 | 1.19 | 1.45 | 0.220 |
Female hummingbirds | − 1.06 | 0.46 | 8.63 | 0.003 |
Adult hummingbirds | − 0.14 | 0.46 | 1.68 | 0.190 |