Tag: Red-Backed Shrike

Blood parasites, reproduction and sexual selection in the red-backed shrike (Lanius collurio)

Red-backed Shrike (Lanius collurio) Science Article 2 abstract We investigated the occurrence of blood parasites on the red-backed shrike Lanius collurio during a three-year study in southern Czech Republic. Selected traits of shrike body morphology, male plumage and reproduction were studied with respect to the presence and intensity of h matozoan infection in blood samples […]

Comparison of methods for diet analysis and prey preference: a case study on the Red-backed Shrike Lanius collurio.

Red-backed Shrike (Lanius collurio) Science Article 8 abstract I studied diet composition and prey preferences of the Red-backed Shrike (Lanius collurio) in an extensive agricultural landscape in the eastern part of Poland. The diet composition of the Red-backed Shrike was described based on the analysis of animal remains in pellets (n = 968 prey items), […]

Nest predators affect spatial dynamics of breeding red-backed shrikes (Lanius collurio)

Red-backed Shrike (Lanius collurio) Science Article 9 abstract Predation may be a strong selective factor affecting individual behaviour and life histories. However, few studies have investigated whether predators affect breeding habitat selection of prey species. We tested whether breeding habitat selection and reproduction of a tropical migrant, the red-backed shrike (Lanius collurio L.), was related […]

Analysis of stable isotopes in feathers of Red-backed Shrikes ( Lanius collurio ): no evidence for different wintering habitats of males and females

Red-backed Shrike (Lanius collurio) Science Article 6 abstract We investigated the stable isotope signatures (d15N and d13C) of greater feather covers of male and female Red-backed Shrikes (Lanius collurio) of a southern German population. Male and female birds did not differ in their isotope signatures, thus revealing similar winter grounds for both sexes Hans Jakober, […]

Using microsatellites to obtain genetic structure data for Red-backed Shrike (Lanius collurio): a pilot study

Red-backed Shrike (Lanius collurio) Science Article 1 abstract The declining Western European population of the Red-backed Shrike (Lanius collurio) is hypothesised to be a part of the same metapopulation as the Dutch population, at the edge of the contracting western range. Due to habitat fragmentation the Dutch population is mainly situated in the Bargerveen reserve […]

Which method is most suitable for censusingbreeding populations of red-backed (Laniuscollurio) and great grey (L. excubitor) shrikes?

Red-backed Shrike (Lanius collurio) Science Article 3 abstract Up to now, studies have shown that it is very difficult to estimate accurate numbers of shrike(Lanius spp) breeding pairs. During our shrike biology research in Western Poland this problemwas evident. Actual breeding pair numbers were derived from a combination of specialcounts in the pre-breeding period, intensive […]

Eggshell patterning in the Red-backed Shrike Lanius collurio: relation toegg size and potential function

Red-backed Shrike (Lanius collurio) Science Article 5 abstract Despite numerous studies on avian eggs, the function of eggshell patterning remains largely unknown. Using a museum collection of Red-backed Shrike clutches, we estimated the repeatability of characteristics describing the intensity and contrast of egg pigmentation, as well as egg size and shape. Digitalized photographs of eggs […]

Red-backed Shrike (Lanius collurio) nest performance in a declining British population: a comparison with a stable population in Poland

Red-backed Shrike (Lanius collurio) Science Article 7 abstract We compare the breeding ecology of Red-backed Shrike Lanius collurio prior to its effective extinction (in 1990) as a breeding bird in the UK with that of a stable population in southwestern Poland. We use breeding performancedata derived from theUK and Polish Nest Record Schemes. Although theclutch […]