Do swans die when their mate dies?

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Tags

1. #other
2. #unless
3. #heart
4. #their
5. #broken
6. #found
7. #species
8. #heartbreak
9. #swans
10. #slimbridge
11. #partner
12. #entire
13. #monogamous
14. #members
15. #widowed
16. #could
17. #scientists