Sökning: "migratory birds"
Visar resultat 1 - 5 av 43 avhandlingar innehållade orden migratory birds.
1. Magnetic orientation in migratory birds
Sammanfattning : My thesis focuses on magnetic orientation in migratory birds, i.e. how they can perceive information from the Earth’s magnetic field and use it for orientation. LÄS MER
2. Dispersal of ticks and their microorganisms by African-Western Palaearctic migratory birds
Sammanfattning : In Europe, tick-borne diseases are the most widespread and common vector-borne diseases and their geographical distribution is increasing. The dispersal of ticks depends on the movements of their vertebrate hosts. Avian hosts are more likely to be involved in long-distance range expansion of ticks due to their migration pattern. LÄS MER
3. There and Back Again - nocturnal migratory behaviour of birds during spring and autumn
Sammanfattning : This dissertation explores the migratory behaviour of nocturnally migrating passerines and common swifts (Apus apus). Birds passing Lund (southern Sweden) and Abisko (northernmost Scandinavia) where sampled using tracking radar. The aim has been to investigate potential diverging strategies between spring and autumn migration. LÄS MER
4. Influenza A virus in wild birds
Sammanfattning : Influenza virus is a RNA virus that exists as different types and subtypes. Influenza A virus strains are known to cause disease in several bird and mammalian species. Wild birds are believed to constitute the natural reservoir for influenza A virus. LÄS MER
5. Importance of wild birds in the spread of Salmonella
Sammanfattning : Salmonella is one of the most important enteropathogenic bacteria. It is responsible for about 5000 reported cases of human gastroenteritis each year in Sweden. Salmonellosis is a zoonotic disease, and the bacterium has the ability to infect a variety of both domestic and wild animal species. LÄS MER