... small the deviations from horizontal or vertical inclination are that migratory birds can detect and use as a reference for their magnetic compass. Here, we asked: what is the steepest inclination angle at which a migratory bird, the Eurasian blackcap (Sylvia atricapilla), can still perform magnetic...

... migratory fasts have shown reductions in intestine mass, morphological changes to the mucosal epithelium, and reductions in food intake and assimilation rate upon initial refeeding. We found that blackcaps (Sylvia atricapilla , Linnaeus) newly arrived at a migratory stopover after crossing the Sahara...

... to demonstrate adaptive hypothermic responses in migrating passerines. While monitoring body temperature (T b) of eight blackcaps (Sylvia atricapilla) by radiotelemetry, we found that during daytime T b =42.5±0.4°C (mean ±s.d.); at night T b decreased to a minimum between 33 and 40°C. We determined the lower...

...Henrik Mouritsen; Ole Næsbye Larsen SUMMARY This paper investigates how young pied flycatchers, Ficedula hypoleuca , and blackcaps, Sylvia atricapilla , interpret and use celestial cues. In order to record these data, we developed a computer-controlled version of the Emlen funnel, which enabled us...