| to making further progress | 9 | purpose |
| to the survival of birds | 9 | transitive-object |
| very | 6 | degree |
| state → be → critical | 75 |
| state → become → critical | 6 |
| negative | neutral | positive |
| 0.137 | 0.667 | 0.196 |
| Raw frequency | 81 |
| Normalized frequency | 0.450 |
| Modifier score | 0.950 |
| Perplexity | 229.424 |