Pied Flycatcher (Ficedula hypoleuca) Science Article 14 abstract In most bird species there is only a short time window available for optimal breeding due to variation in ecological conditions in a seasonal environment. Long-distance migrants must travel before they start breeding, and conditions at the wintering grounds and during migration may affect travelling speed and […]
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Mass loss in female Pied Flycatchers Ficedula hypoleuca during late incubation: Supplementation fails to support the reproductive stress hypothesis.
Pied Flycatcher (Ficedula hypoleuca) Science Article 12 abstract In most species of altricial birds, females experience great changes in body mass during the reproductive period. Mass loss of females after hatching of the young has commonly been regarded as a result of increased reproductive stress. Alternatively, the loss of body mass during this period is […]
Individual fluctuating asymmetry in pied flycatchers(Ficedula hypoleuca) persists across moults,but is not heritable and not related to fitness
Pied Flycatcher (Ficedula hypoleuca) Science Article 7 abstract Neither composite nor single trait fluctuating asymmetry was associated withindividual condition, attractiveness, reproductive success or survival. Estimated heritabilitiesof signed and unsigned fluctuating asymmetry were low and non-significant. This impliesthat fluctuating asymmetry was a poor predictor of genetic quality or phenotypic condition.Among-individual differences in fluctuating asymmetry therefore had […]
Sexual size dimorphism and sources of variation in the growth of wing feathers in nestling Pied Flycatchers Ficedula hypoleuca
Pied Flycatcher (Ficedula hypoleuca) Science Article 4 abstract I report a 5-year field study of the growth of flight feathers, as scored by the lengths of the wing and first-primary feather, of Pied Flycatcher nestlings when they were 13 days old. Further evidence to that already published for gender differences in growth of different traits […]
Environmental, genetic and maternal components of immunocompetence of nestling pied flycatchers from a cross-fostering study
Pied Flycatcher (Ficedula hypoleuca) Science Article 16 abstract Genetic, environmental and maternal effects can all affect the phenotypic expression of a trait.Through cross-fostering experiments in nesting birds, variation due to genetic and environmentaleffects can be partitioned and identified as being due to nest of origin and nest ofrearing in a two-factor nested analysis of variance […]
Effect of habitat and latitude on nestling diet of Pied Flycatchers Ficedula hypoleuca.
Pied Flycatcher (Ficedula hypoleuca) Science Article 13 abstract Composition and diversity of the nestling diet of Pied Flycatchers Ficedula hypoleuca was compared among 17 European study areas that differed in habitat type (deciduous or coniferous forest). The most abundant foods were butterflies and moths (Lepidoptera), with a high proportion of caterpillars. The proportions of beetles […]
Parental care in Pied Flycatchers Ficedula hypoleuca: Energy expenditure in relation to plumage colour and mating status
Pied Flycatcher (Ficedula hypoleuca) Science Article 11 abstract Females may benefit from expending more resources in care of offspring sired by sexually attractive males than by those of unattractive males in species with biparental care. Attractive males may therefore reduce their share of parental expenditure to increase own survivorship and to further mating success. On […]
Parental care in Pied Flycatchers Ficedula hypoleuca: Energy expenditure in relation to plumage colour and mating status
Pied Flycatcher (Ficedula hypoleuca) Science Article 11 abstract Females may benefit from expending more resources in care of offspring sired by sexually attractive males than by those of unattractive males in species with biparental care. Attractive males may therefore reduce their share of parental expenditure to increase own survivorship and to further mating success. On […]
Environmental restrictions on reproduction in the Pied Flycatcher Ficedula hypoleuca.
Pied Flycatcher (Ficedula hypoleuca) Science Article 9 abstract I compared two populations of Pied Flycatchers Ficedula hypoleuca breeding in a coniferous forest with adverse weather conditions (‘marginal habitat’) and in a deciduous forest with a more favourable climate (‘good habitat’). Female mass was significantly larger during the reproductive cycle in the ‘good habitat’. The incubation […]
Environmental restrictions on reproduction in the Pied Flycatcher Ficedula hypoleuca.
Pied Flycatcher (Ficedula hypoleuca) Science Article 9 abstract I compared two populations of Pied Flycatchers Ficedula hypoleuca breeding in a coniferous forest with adverse weather conditions (‘marginal habitat’) and in a deciduous forest with a more favourable climate (‘good habitat’). Female mass was significantly larger during the reproductive cycle in the ‘good habitat’. The incubation […]