Larus fuscus fuscus
The lesser black-backed gull is possibly the rarest of the ‘hidden treasures’ on Djurgården. This gull is not so well known in Sweden, and few Stockholmers are aware that the city centre’s commonest gull (in the summer) is a species that is rapidly declining in the Baltic Sea region. The Royal National City Park is proud to have the largest colony in the archipelago with over 100 pairs on the Fjäderholm islands. The reason for Stockholm’s dense colony is possibly the abundance of roofs suitable for breeding as well as discarded take-aways and other food-waste in the streets, squares and parks. Those who wish to see this bird should look from mid-April until mid-September for a gull with black wings and yellow legs. The very similar great black-backed gull is rather uncommon in Stockholm’s central areas in the summer half of the year. Many recognise the lesser black-backed gull at a distance by its nasal call, which greatly differs from that of the herring gull.