| Publication Type: | Journal Article |
| Year of Publication: | 1967 |
| Authors: | Thompson, G.B. |
| Journal: | Bardsey Bird and Field Observatory Report 15: 43-45. |
| Pagination: | 520 |
| Publication Type: | Journal Article |
| Year of Publication: | 1967 |
| Authors: | Thompson, G.B. |
| Journal: | Bardsey Bird and Field Observatory Report 15: 43-45. |
| Pagination: | 520 |