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30 June 2026

Spring and early summer 2026

May and June 2026 have been busy months at Kvismare Bird Observatory.

Bilden visar två ungar av ägretthäger i sitt bo

6 June 2025

Great Egrets, first breeding in Kvismaren

Great egrets (Ardea alba) have been recorded in Kvismaren for several years. In the summer of 2025, they are breeding in Kvismaren for the first time!

9 July 2024

Spring 2024

We had two field workers throughout the spring. Wetland surveys recorded high numbers of Black-headed Gulls, Little Gulls, and Marsh Harriers.

18 December 2022

Autumn 2022

In 2025, Kvismare Bird Observatory ringed 4,350 birds and recorded several rare species. Major habitat restoration to benefit birds and visitors continued around the area.

Our projects

Bird Ringing

Bird ringing is the most time consuming activity at the bird observatory, starting after midsummer and continuing for the remainder of the season until the end of September. When the weather is favourable, ringing takes place every morning from sunrise to noon.

The ringing is standardised which means that the same number of mist nets are used at the same sites year after year. Through this standardisation it is possible to compare different years and analyse changes in the bird populations.

Marsh Harrier

Even before the Bird Observatory started, (from 1954) there were counts of breeding pairs of Hen and Marsh Harriers within the reserve. The breeding of Hen Harriers ended after the year 1962 but the number of pairs of the Marsh Harrier has developed positively. Over the years there have been many studies including territoriality, breeding biology and population monitoring.

Cranes and geese

På senare år har antalet häckande grågäss samt rastande sädgäss och tranor ökat kraftigt i Kvismaren. Den första arten som nådde stora antal var de rastande sädgässen i början av 1980-talet. De sädgäss som rastar i Kvismaren är huvudsakligen skogssädgäss och befinner sig i området under september och november. Därefter flyger de till övervintringslokalerna i Skåne och Danmark och återvänder sedan till någon av de stora rastplatserna i februari–mars innan de flyttar vidare till Finland och Ryssland.