| Similarity | Rank | |
|---|---|---|
| rspb | 0.696 | 13560 |
| mammals | 0.685 | 54555 |
| endangered | 0.683 | 10978 |
| animals | 0.679 | 25256 |
| audubon | 0.649 | 39678 |
| penguin | 0.649 | 8319 |
| wildlife | 0.638 | 3713 |
| ibis | 0.637 | 35575 |
| humming | 0.636 | 88352 |
| birdlife | 0.616 | 45661 |
| whales | 0.614 | 55353 |
| bird | 0.612 | 1183 |
| avocet | 0.612 | 52783 |
| ornithology | 0.608 | 27933 |
| bats | 0.605 | 49416 |
| songbird | 0.601 | 51999 |
| shrubs | 0.600 | 76086 |
| dogs | 0.594 | 12011 |
| breeds | 0.594 | 41491 |
| conservancy | 0.594 | 18560 |
| pelican | 0.594 | 20532 |
| plantlife | 0.594 | 90986 |
| snakes | 0.593 | 51335 |
| otter | 0.591 | 12471 |
| bto | 0.590 | 65943 |