| Citation | Garthe, S., D. Gremillet and R.W. Furness 1999 At-sea-activity and foraging efficiency in chick-rearing northern gannets Sula bassana: a case study in Shetland. Seabirds Mar. Ecol. Prog. Ser. 185:93-99. |
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| Ref. No. | 4327 |
| Language | English |
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