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Diet, composition, and mean body mass of mallards in the experimental groups
| Diet type | Diet composition | Group composition | Body mass (g) (± SD) |
|---|---|---|---|
| Animal‐based | Trout pellets | 4 ♀ + 2 ♂ | 1,150 (± 184) |
| Intermediate | 1:1 mixture | 4 ♀ + 2 ♂ | 1,130 (± 88) |
| Plant‐based | Mixed grains | 3 ♀ + 3 ♂ | 1,087 (± 143) |
