| Αναφορά | Pearson, T.H., 1968 The feeding biology of sea-bird species breeding on the Farne Islands, Northumberland. Journal of Animal Ecology 37(3):521-552. |
| Αναφ. | 4625 Pearson, T.H., 1968 |
| Σελίδα | |
| Named Used as Valid | Fratercula arctica |
| Περιοχή | |
| Distribution |