Clue | Source | Date |
---|---|---|
The bird Sterna paradisaea (6,4) | ||
Seabird that undertakes the longest migration in the animal kingdom | ||
Maker of an over-70,000-kilometer annual round trip | Wall Street Journal | 20 Jun 2019 |
Maker of an over-70,000-kilometer annual round trip | ||
Black-capped migratory bird | The Telegraph General Knowledge | 10 Jun 2018 |