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Non-breeding season: migratory connectivity und carry-over effects
Conditions in the non-breeding habitats can affect reproduction and survival and thus, eventually, determine population dynamics of
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En route: Migration strategies
Weather conditions during flight, food availability on intermittent stop-over sites and stochasticity in these factors put a strong
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Role of Corticosterone during migration
Long-distance migration requires many physiological and behavioural adaptations such as changes in muscle enzyme activities, hyperphagia
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En route: Energy metabolism of bird migration
During migration birds will go repeatedly through two behavioural and physiological stages: fuelling and the endurance flight. Fuelling is
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Between the worlds: Modelling bird migration
During migration, periods of flight alternate with periods on stop-over sites, where birds accumulate body reserves for the next migratory
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Radar ornithology
To date radar is the only available tool to quantify bird movements during day and night time over large areas and for long time periods.
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Indirect tracking: Geolocator
The principle underlying geolocation has been known for a long time. Sailors in medieval times determined the positions of their ships
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Long-term surveillance of bird migration on Col de Bretolet
Each autumn thousands of migrants cross the Col de Bretolet, a pass located in the Swiss Alps. In the year 1958 a ringing program was
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Moon-watching
The majority of migrating birds choose to travel in high altitudes at night. Although their calls can be sometimes heard, many birds pass
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Ring re-encounter analysis: R-functions to download
Analyses of ring re-encounter data often require non-standard methods. Here, a few functions written for the free statistical software R
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