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Ultraviolet and green parts of the colour spectrum affect egg rejection in the song thrush (Turdus philomelos)
This is the first detailed study showing that different colour perception by the birds can affect their responses towards the parasitic egg, and suggests that the combination of UV and visible ranges of the spectra plays a major role in the evolution of discrimination processes, as well as in the development of the mimicry of the parasitic Egg.
Birds of a feather winter together: migratory connectivity in the Reed Warbler Acrocephalus scirpaceus
Investigating migratory connectivity in the Reed Warbler Acrocephalus scirpaceus found remarkable connectivity between breeding and non-breeding grounds and stable isotope analysis confirmed the separation of wintering areas of SW- and SE-migrating populations.
Are blackcaps current winners in the evolutionary struggle against the common cuckoo?
It is predicted that the intraclutch variation in egg appearance should be generally low in all individuals, and regarding conspecific eggs, rejection decisions should be highly dependent on the degree of mimicry between parasitic and host eggs, and found support for these predictions.
Sex-specific defence behaviour against brood parasitism in a host with female-only incubation
Low genetic differentiation among reed warbler Acrocephalus scirpaceus populations across Europe
Low levels of genetic differentiation among reed warbler populations but this genetic differentiation was not pronounced enough to detect a clear population structure using the microsatellite data and no prior information on geographic location of the sampled individuals suggests a possibly recent divergence of European populations after a rapid range expansion.
Using stable isotopes to trace resource acquisition and trophic position in four Afrotropical birds with different diets
Using stable isotopes to trace resource acquisition and trophic position in four Afrotropical birds with different diets using stable isotope ratios is used to solve the mystery of the ostrich's migratory habits.
Brood parasites lay eggs matching the appearance of host clutches
- M. Honza, M. Šulc, V. Jelínek, M. Požgayová, P. Procházka
- Biology, MedicineProceedings of the Royal Society B: Biological…
- 7 January 2014
The results indicate that cuckoos select certain host nests to increase matching of their own eggs with host clutches, but only in chromatic characteristics, and suggest that the ability of cuckoo to actively choose host nests based on the eggshell appearance imposes a strong selection pressure on host egg recognition.
Choosing suitable hosts: common cuckoos Cuculus canorus parasitize great reed warblers Acrocephalus arundinaceus of high quality
This study revealed that cuckoos parasitize great reed warbler females of higher quality, as reflected in host body condition and egg colour characteristics, in highly mimetic systems.
Phylogeography of a Habitat Specialist with High Dispersal Capability: The Savi’s Warbler Locustella luscinioides
Mitochondrial sequences indicated the existence of refugia-within-refugia in the Iberian Peninsula during the last glacial period, which is surprising given the high dispersal capacity of this species.
Barrier crossing in small avian migrants: individual tracking reveals prolonged nocturnal flights into the day as a common migratory strategy
It is suggested that prolonged endurance flights are not an exception even in small migratory species and an individual’s ability to perform both diurnal and nocturnal migration when facing the challenge of crossing a large ecological barrier to successfully complete a migratory journey is emphasised.