The purpose of this report has been to examine reason(s) behind the return of the red kite (Milvus milvus) to Hornborgasjön (a government-protected lake situated in the southwest of Sweden). The method of the study has been mainly based on observation-data reaching back to the latter part of the 19th century and ending with the year 2018, with the emphasis on the increasing numbers of nesting red kites during the 21st century. As a part of the study, email correspondence with ornithologists, mainly from Hornborgasjön field station, was also conducted, as well as comparison with other scientific research studies on the red kite. The results indicate that the red kite was a common bird of prey in the southern part of Sweden until the mid-19th century, after which the population started to decline. The main reasons seem to be both direct and indirect persecution. As a part of this the red kite, as well as many other birds of prey, were severely affected by different kinds of biocides used in the agriculture and in the forest industry. The return of the red kite seem to be a result of three factors, firstly it became protected in the 1920th, secondly a cease of the use of the most severely effecting biocides and thirdly a conservation project that started in Skåne in the mid-1970s. As the population of red kites increased in Skåne they started to extend their population northwards and thereby made their way back to Hornborgasjön. / <p>På grund av Covid-19 hölls presentationen via zoom</p>
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:umu-173287 |
| Date | January 2020 |
| Creators | Linstad, Johanne |
| Publisher | Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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