| Clue | Source | Date |
|---|---|---|
| Breastbones | Wall Street Journal | 01 Jun 2022 |
| What adders do to swallow bird bones | ||
| Breastbones | Wall Street Journal | 21 Nov 2019 |
| Breastbones | New York Times | 27 Mar 2018 |
| Ribs connectors | Wall Street Journal | 15 Mar 2018 |
| Breastbones | ||
| Chest protectors | ||
| Chest protectors | ||
| Parts of some cages | ||
| Breastbones | ||
| Breastbones | ||
| Breastbones |