Planet of Birds

Bluethroat (Luscinia svecica) Science Article 6 abstract To assess the functions of male song in Bluethroat (Luscinia svecica svecica), seasonal and diurnal patterns of song and song-flight activity were analyzed by using data on individually marked birds. The seasonal patterns of singing and song-flight activity were found to peak shortly after male arrival and before […]

Bluethroat (Luscinia svecica) Science Article 15 abstract We tested the use of amplified fragment length polymorphism (AFLP) to assess the frequencyof extra-pair parentage in a bluethroat (Luscinia svecica namnetum) population.Thirty-six families totalling 162 nestlings were analysed. Using a combination of threeprimer pairs, we reached an exclusion probability of 93% for the population. S. QUESTIAU, M.C. […]

Bluethroat (Luscinia svecica) Science Article 16 abstract Females in several sexually dimorphic species with conventional sex roles possess ornamental traits that resemble those found in males. The evolution of such traits, however, is still poorly understood. P.T. Smiseth and T. Amundsen, Behav Ecol Sociobiol (2000) 47:205-212 Download article download full text (pdf)

Bluethroat (Luscinia svecica) Science Article 3 abstract We analysed mitochondrial DNA (mtDNA) sequences from 154 bluethroats (Luscinia svecica) sampled at 21 sites throughout much of their Eurasian range. A previously reported, single base-pair mtDNA difference between L. s. svecica and L. s. namnetum was inconsistent upon expanded geographical sampling. A significant FST value (0.29) and […]

Bluethroat (Luscinia svecica) Science Article 1 abstract Female extra-pair copulations (EPCs) have selected for male paternity guarding strategies in many bird species. In the bluethroat, Luscinia s. svecica, males guard their mates closely during the last 2 d before the start of egg laying, but there is great individual variation in the intensity of mate […]

Bluethroat (Luscinia svecica) Science Article 5 abstract The evolutionary equilibrium hypothesis explains the existence of both acceptors and rejecters of brood parasite eggs within a host population as resulting from a balance between the costs of acceptance and the costs of recognition errors. In such equilibria conditional responses may play an important role. One such […]

Bluethroat (Luscinia svecica) Science Article 9 abstract If constant and size-specific values of the fat-free body mass are used for estimating the fat content of migrating birds, it is required that the fat-free body mass does not vary considerably between age and sex groups. To test this requirement, body masses of autumn migrating Blue-throats from […]

Bluethroat (Luscinia svecica) Science Article 21 abstract We studied the sex ratio of Bluethroat Luscinia svecica broods using AFLPs. Our aim was to test whether there is a bias towards males that could be explained by sexual selection theories, or conversely, a bias towards females that could help explain the female-biased sex ratio among juveniles […]

Bluethroat (Luscinia svecica) Science Article 12 abstract Los actuales conocimientos sobre la migraciondel Pechiazul Luscinia svecica en Europaestan basados principalmente en aves anilladasen paises nordicos M. HERNANDEZ et al, Ardeola 50(2), 2003, 259-263 Download article download full text (pdf)

Bluethroat (Luscinia svecica) Science Article 10 abstract Sperm cells are highly diversified in birds and considerable research effort has focused on variation in sperm morphology between species. However, surprisingly little is known about intraspecific variation in sperm morphology in birds. We analyzed between- and within-male variation in total sperm length in two passerine species, the […]