| Clue | Source | Date |
|---|---|---|
| Relatives of loons | Eugene Sheffer | 19 Apr 2021 |
| Diving birds | New York Times | 16 Mar 2021 |
| Diving waterbirds | Irish Times Simplex | 24 Feb 2021 |
| Crested waterfowl | Irish Times Simplex | 31 Jul 2020 |
| Diving birds | Universal | 28 Aug 2017 |
| Diving birds | ||
| Loon's look-alikes | Universal | 27 Oct 2015 |
| Divers with floating nests | The Chronicle of Higher Education | 08 May 2015 |
| Loon's look-alikes | ||
| Divers with floating nests | ||
| Dabchicks, e.g. | ||
| Diving birds | ||
| Diving birds | ||
| Pied-billed birds | ||
| Loon relatives | ||
| Diving birds | ||
| Diving birds | ||
| Dabchicks and kin | ||
| Loon relatives | ||
| Loons' kin | ||
| Diving birds | ||
| Loons' kin | ||
| Devil-divers | ||
| Diving birds. | ||
| Swimming birds. | ||
| Birds that eat feathers. |