| no longer | 7 | temporal |
| according to a zoo spokesperson | 5 | other |
| except in captivity | 3 | other |
| bird → be able to → survive | 24 |
| bird → can → survive | 19 |
| bird → could → survive | 13 |
| bird → be likely to → survive | 9 |
| negative | neutral | positive |
| 0.243 | 0.441 | 0.316 |
| Raw frequency | 65 |
| Normalized frequency | 0.555 |
| Modifier score | 0.767 |
| Perplexity | 90.542 |