| Clue | Source | Date |
|---|---|---|
| Flightless species last seen in the 1660s | LA Times Daily | 13 Jan 2026 |
| Bygone resident of Mauritius | Wall Street Journal | 10 Jun 2024 |
| Pigeon's extinct cousin | Wall Street Journal | 11 Sep 2023 |
| Extinct flightless feathered animal | Newsday | 26 Apr 2022 |
| Onetime resident of Mauritius | New York Times | 10 Oct 2018 |
| Onetime resident of Mauritius | ||
| Metaphor for obsolescence |