Planet of Birds

Blackcap (Sylvia atricapilla) Science Article 8 abstract It has been argued that the body mass levels achieved by birds are determined by the trade-off be-tween risks of starvation and predation. Birds have also been found to reduce body mass in response to an increased predation risk. Thord Fransson Thomas P. Weber, Behav Ecol Sociobiol (1997) […]

Blackcap (Sylvia atricapilla) Science Article 2 abstract To describe the phenology of migratory passages and wintering of Blackcaps.Location: Orange plantations in eastern Spain.Methods: Data were collected between 1997 and 2002 at a Constant Effort Site. Results: We captured between 94 and 206 individuals per season (from September to April of the next year). We used […]

Blackcap (Sylvia atricapilla) Science Article 9 abstract When birds are attacked by predators, take-off ability is crucial for the chance of survival. Recently, theoretical studies have predicted that predation risk in terms of reduced flight performance increases with body mass. Cecilia Kullberg, Thord Fransson and Sven Jakobsson, Proc. R. Soc. Lond. B 22 December 1996 […]

Blackcap (Sylvia atricapilla) Science Article 4 abstract The spatial distribution of Blackcaps (Syh.’ia atricapilla) was studied on the basis of ringing recaptures during the post-fledging period and during autumn migratory stopovers on the Courish Spit of the Baltic Sea. The distribution of distances between capture locations of individual birds was compared with the simulation model […]