Black-capped Donacobius (Donacobius atricapilla) Science Article 3 abstract A color-banded population of Black-capped Donacobius (Donacobius atricapillus) on a Peruvian oxbow lake was studied during one breeding season and censused for 3 yr thereafter. Eighteen territories along a marshy shoreline were occupied by groups of 2-4 donacobius. Each group contained a mated pair and 0-2 helpers, […]
A family name for the monotypic oscine passerine genus Donacobius
Black-capped Donacobius (Donacobius atricapilla) Science Article 1 abstract The taxonomic affinities of the Neotropical endemic bird genus Donacobius (and its only species D. atricapilla) have long been a challenging issue in systematic ornithology. Sincethe 19th century, this monotypic genus has been alternatively regarded as a member of the following oscine passerine families: Turdidae, Troglodytidae, and […]
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. […]
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 […]
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 […]
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 […]
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 […]
Is there an autumn migration of continental Blackcaps(Sylvia atricapilla) into northern Europe?
Blackcap (Sylvia atricapilla) Science Article 10 abstract All ringing recovencs of Blackcaps in Europe were examined during Northward autumn migration into this area. The result indicates autumn movements… Thimi Fransson and Bengt-Olov Stolt, Vogelwarte 37: 89-95 Download article download full text (pdf)
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 […]
Impaired Predator Evasion in Fat Blackcaps (Sylvia atricapilla)
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 […]