Site maintenance

Submitted by admin on 2 November 2025.

We are currently working on the site kvismaren.org. Things might look a bit messy from time to time.

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The summer 2020 at the Observatory

Submitted by admin on 15 April 2025.

In June... månad avslutades en intensiv vårsäsong med ett stort antal projekt. Trots en kall vår och första del av sommaren så fångar vi mycket ungfåglar. Studierna av jordbruksarter har utökats med intensiva studier av bl.a. sånglärkor. Den utsatta populationen av ortolansparv fortsätter att följas. I år var det också dags för kråkinventeringen som genomförs vart femte år.

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Wetland surveys

Over time, restored areas around the lake have been surveyed to decipher breeding wetland species. In 1981, Lake Rysjön was restored. From 1982, all breeding wetland birds have been monitored and production of young calculated. In recent years, the Bird Observatory has had closer co-operation with the provincial government. From 2009, we have done censuses on all wetland birds for the provincial government covering all parts of the wetland nature reserve.

Savi's warbler

In 2012 a project started in which the Savi’s Warbler, a recently established species Kvismaren be studied this has been funded by the Elis Wides fund. The aim is to find out how many individuals are present and how many nests are in the reserve. The secondary aim is to acknowledge if the population is still held up by stray birds or if we have a small yet established population.

Osprey

In 1971, in collaboration with the Museum of Natural History we started a census of Osprey. The origin of this collaboration was the poor breeding performance of Ospreys seen at the end of the 1960s. Almost simultaneously, reports came from abroad about the thinning of their egg shells that affected many bird species and could be attributed to the use of DDT. It turned out that Swedish Ospreys were influenced by this; at its worst around 15% of the population (in the early 1970's).