| with some darker feather | 4 | other |
| depending on the season | 3 | other |
| in the nominate subspecies | 2 | other |
| head → be → grey | 25 |
| head → be → light grey | 4 |
| head → be → dark grey | 3 |
| negative | neutral | positive |
| 0.125 | 0.788 | 0.087 |
| Raw frequency | 32 |
| Normalized frequency | 0.448 |
| Modifier score | 0.700 |
| Perplexity | 312.400 |