| Species | Weight (g) | Wing (mm) | Tail (mm) | Beak Culmen (mm) | Beak Width (mm) | Beak Depth (mm) | Body Condition Index 1 | Body Condition Index 2 |
| A. savannarum (n = 97) | 16.93a ± 0.09 | 61.73a ± 0.23 | 45.85a ± 0.49 | 10.65a ± 0.09 | 7.78a ± 0.48 | 6.03a ± 0.03 | 0.27a ± 0.002 | 0.71a ± 0.005 |
| A. bairdii (n = 38) | 17.52b ± 0.15 | 68.48b ± 0.36 | 49.47b ± 0.79 | 8.86b ± 0.15 | 5.48b ± 0.77 | 5.52b ± 0.05 | 0.25b ± 0.001 | 0.54b ± 0.009 |
| A. savannarum |
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| F (n = 41) | 16.69a ± 0.12 | 60.87a ± 0.26 | 45.12a ± 0.34 | 10.63a ± 0.13 | 5.81a ± 0.87 | 6.04a ± 0.05 | 0.27a ± 0.002 | 0.73a ± 0.008 |
| M (n = 56) | 17.11b ± 0.10 | 62.35b ± 0.22 | 46.39b ± 0.29 | 10.67a ± 0.11 | 5.76a ± 0.75 | 6.03a ± 0.04 | 0.27a ± 0.001 | 0.70b ± 0.007 |
| A. bairdii |
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| F (n = 20) | 16.79a ± 0.18 | 67.0a ± 0.61 | 47.9a ± 1.81 | 8.64a ± 0.26 | 5.31a ± 0.10 | 5.42a ± 0.07 | 0.24a ± 0.002 | 0.55a ± 0.01 |
| M (n = 18) | 18.33b ± 0.19 | 70.88b ± 0.65 | 51.16b ± 1.91 | 9.10a ± 0.27 | 5.67b ± 0.10 | 5.63a ± 0.08 | 0.26b ± 0.002 | 0.52b ± 0.01 |