It turns out that it is not always different seagulls that you see swarming around the TESO boat. According to Mardik, all seagulls have their own personalities, just like people. The seagulls you see here are real ‘boat specialists’, as he calls them.
He knows this because some seagulls are ringed. He can identify them by putting the numbers on the photo. Because he has been doing this for so long, he has built up an impressive archive and is able to describe the entire life cycle of many seagulls.
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