Fat accumulation and autumn migration strategy of Reed WarblersAcrocephalus scirpaceusand Sedge WarblersA.schoenobaenusin southern Sweden

摘要: In order to investigate fat accumulation and the migration strategy of Reed Sedge Warblers during autumn, their pattern deposition at onset was recorded analysed using ringing data from three bird observatories, Kvismaren, Getteron Falsterbo in southern Sweden. The suggest that birds have adopted a where they do not use all accumulated single migratory flight, but travel with higher load than necessary for specific flight stage. By arriving next stopover site some remaining, become less vulnerable quality sites variation food availability migration.