Sökning: "migratory birds"
Visar resultat 11 - 15 av 43 avhandlingar innehållade orden migratory birds.
11. Stopover behaviour in migratory songbirds: timing, orientation and departures
Sammanfattning : Songbird migrants use stopovers between flight bouts to rest and refuel for the upcoming flights. Behaviours affecting where, when and how long to stay at stopover sites will affect how successful the overall migration will be, which has significant consequences for the overall fitness and mortality of the birds. LÄS MER
12. Comparative aspects of metabolism and morphology in the pectoralis muscle of passerine birds with differing migratory behaviour
Sammanfattning : .... LÄS MER
13. Climate change effects on migratory birds and on the ecology and behaviour of the willow warbler (Phylloscopus trochilus)
Sammanfattning : Recent global climate change is influencing the behaviour and ecology of species worldwide. Birds are typical systems to study in this context, as they are often migratory and thus subjected to a variety of environmental effects. LÄS MER
14. Genomic analyses of migratory divides in the willow warbler
Sammanfattning : In many species of birds juveniles migrate independently of experienced adults and thus have to rely on innate information about migratory routes and wintering area. This information is encoded as a set of inherited migratory directions and a timing schedule that provides information on when and how far to migrate. LÄS MER
15. Fuel and fly: adaptations to endurance exercise in migrating birds
Sammanfattning : Birds on migration alternate between consuming fuel stores during flights and accumulating fuel stores during stopovers. This thesis highlights some of the ways in which migrating birds have adapted to the different demands of fuelling and flight. Most of the time on migration is spent at stopover sites accumulating fuel stores. LÄS MER
