Tag: Blackcap

Habitat and nest site preferences of Sylvia atricapilla and S. melanocephala in Majorca

Blackcap (Sylvia atricapilla) Science Article 3 abstract Sylvia melanocephala (S. m.) and S. atricapilla (S. a.) are common in woody habitats of the western Mediterranean. Nevertheless, detailed information on habitat and particularly nest site preferences is scarce. Within its western Pal arctic distribution, S. m. breeds in the Mediterranean zone, mainly in dry coastal regions […]

Signals of profitability? Food colour preferences in migrating juvenile blackcaps differ for fruits and insects.

Blackcap (Sylvia atricapilla) Science Article 5 abstract Red is a common colour signal in both aposematic warning displays, and in fruit displays. One common feature is that red is conspicuous against the natural background of the prey and fruits. However, there is a potential conflict between fruits and aposematic prey in how a bird predator […]

The breeding performance of Blackcap Sylvia atricapilla in two types of forest habitat.

Blackcap (Sylvia atricapilla) Science Article 1 abstract The breeding densi ty of Blackcap was about four times higher in deciduous (D) riparian linear vegetation than in mixed (M) coniferous woodlots in the farmland of Eastern Bohemia, Czech Republi c, over two years. Laying started and peaked about two days later in M habitat, possibly because […]

HISTORICAL DIVERSIFICATION OF MIGRATION PATTERNS IN A PASSERINE BIRD

Blackcap (Sylvia atricapilla) Science Article 11 abstract Migratory strategies of birds require complex orientation mechanisms, morphological adaptations, and lifehistory adjustments. From an evolutionary perspective, it is important to know how fast this complex combination of traits can evolve. We analyzed mitochondrial control-region DNA sequences in 241 blackcaps (Sylvia atricapilla) JAVIER PEREZ-TRIS, Evolution, 58(8), 2004, pp. […]

Are blackcaps Sylvia atricapilla differential distance migrants by sex?

Blackcap (Sylvia atricapilla) Science Article 7 abstract The extent of movements of male and female British blackcaps were analysed using ringing recovery records. Furthermore, through a literature review and the collection of original field data, the sex-ratios of blackcap samples taken at several latitudes in Europe and Africa were compared. Paulo CATRY, Miguel LECOQ, Greg […]

Birds and rodents destroy different nests: a study of Blackcap Sylvia atricapilla using the removal of nest concealment

Blackcap (Sylvia atricapilla) Science Article 6 abstract Nest predation is a major factor limiting the reproductive output of small passerines (Ricklefs 1969). Thus, selecting safe nest-sites is critically important for these birds. Nest concealment can inhibit transmission of visual, chemical or auditory cues to predators (Martin 1993). However, although there are numerous studies demonstrating the […]

Spatial behaviour of first-year Blackcaps (Sylvia atricapilla) during thepre-migratory period and during autumn migratory stopovers

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 […]

Migratory fuelling in blackcaps [Sylvia atricapilla)under perceived risk of predation

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) […]

Migration and wintering of Blackcaps Sylvia atricapilla in Eastern Spain

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 […]