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| Name：Trevorguabs | 27, Mar, 2026 23:22:04 | |
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etc. Population estimates are obtained from the census of breeding Herring Gulls as well as from 'mark and recapture' observations throughout the year. Movements of the Herring Gulls are examined together with the distances of these movements. The behaviour of 1st and 2nd year Herring Gulls is compa | |
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