Delhey, K.; Peters, A.; Biedermann, P. H. W.; Kempenaers, B.: Optical properties of the uropygial gland secretion: No evidence for UV cosmetics in birds. Die Naturwissenschaften 95 (10), pp. 939 - 946 (2008)
Delhey, K.; Peters, A.; Johnsen, A.; Kempenaers, B.: Brood sex ratio and male UV ornamentation in blue tits (Cyanistes caeruleus): Correlational evidence and an experimental test. Behavioral Ecology and Sociobiology 61 (6), pp. 853 - 862 (2007)
Peters, A.; Delhey, K.; Johnsen, A.; Kempenaers, B.: The condition-dependent development of carotenoid-based and structural plumage in nestling blue tits: Males and females differ. American Naturalist 169 (S1), pp. S122 - S136 (2007)
Delhey, K.; Kempenaers, B.: Age differences in blue tit Parus caeruleus plumage colour: Within-individual changes or colour-biased survival? Journal of Avian Biology 37 (4), pp. 339 - 348 (2006)
Peters, A.; Delhey, K.; Goymann, W.; Kempenaers, B.: Age-dependent association between testosterone and crown UV coloration in male blue tits (Parus caeruleus). Behavioral Ecology and Sociobiology 59 (5), pp. 666 - 673 (2006)
Iribarne, O.; Bruschetti, M.; Escapa, M.; Bava, J.; Botto, F.; Gutierrez, J.; Palomo, G.; Delhey, K.; Petracci, P.; Gagliardini, A.: Small- and large-scale effect of the SW Atlantic burrowing crab Chasmagnathus granulatus on habitat use by migratory shorebirds. Journal of Experimental Marine Biology and Ecology 315 (1), pp. 87 - 101 (2005)
Johnsen, A.; Delhey, K.; Schlicht, E.; Peters, A.; Kempenaers, B.: Male sexual attractiveness and parental effort in blue tits: A test of the differential allocation hypothesis. Animal Behaviour 70 (4), pp. 877 - 888 (2005)
Peters, A.; Delhey, K.; Denk, A.; Kempenaers, B.: Trade-offs between immune investment and sexual signaling in male mallards. American Naturalist 164 (1), pp. 51 - 59 (2004)
Peters, A.; Denk, A.; Delhey, K.; Kempenaers, B.: Carotenoid-based bill colour as an indicator of immunocompetence and sperm performance in male mallards. Journal of Evolutionary Biology 17 (5), pp. 1111 - 1120 (2004)
Petracci, P. F.; Delhey, K.: Nesting attempts of the Cliff Swallow Petrochelidon pyrrhonota in Buenos Aires Province, Argentina. Ibis 146 (3), pp. 522 - 525 (2004)
Delhey, K.; Johnsen, A.; Peters, A.; Andersson, S.; Kempenaers, B.: Paternity analysis reveals opposing selection pressures on crown coloration in the blue tit (Parus caeruleus). Proceedings of the Royal Society B: Biological Sciences 270 (1528), pp. 2057 - 2063 (2003)
Johnsen, A.; Delhey, K.; Andersson, S.; Kempenaers, B.: Plumage colour in nestling blue tits: Sexual dichromatism, condition dependence and genetic effects. Proceedings of the Royal Society B: Biological Sciences 270 (1521), pp. 1263 - 1270 (2003)
Why do primates have big brains? In the Panamanian rainforest, scientists pitted large-brained primates against smaller-brained mammals to find out who was the smartest forager
The first narrative nonfiction book about the pioneering animal tracking project ICARUS, written by its founder Martin Wikelski, is published by Greystone Books