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Significant decline of biodiversity in farmlands has been reported for several decades. To limit the negative impact of… Expand Genetic studies have shown that extra-pair paternity is widespread among socially monogamous bird species. Yet, the role of males… Expand Results of this study indicate that in the Ortolan Bunting Emberiza hortulana, syllables of the same shape on sonograms (i.e… Expand The effects of light wavelength on photoperiodic clock were determined in the migratory male blackheaded bunting (Emberiza… Expand Abstract Female promiscuity is widespread in birds, as well as in other taxa. It is often assumed that in bird species with a… Expand The effects of the duration and time of food availability on stimulation of the photoperiodic responses (fattening and gain in… Expand Patterns of change in distribution (presence/ absence) and abundance since the late 1960s were examined in 20 species of farmland… Expand Abstract Leaves and other non-woody canopy parts are rarely preserved in coals. Although the pH of pore waters within peat swamps… Expand Abstract In the redheaded bunting Emberiza bruniceps, thyroidectomy inhibited premigratory fattening and nocturnal restlessness… Expand Abstract Songs were recorded from male yellowhammers, Emberiza citrinella, in England and West Germany. Sonagraphic analysis… Expand