caa a22 4500 46317576X CHVBK 20180406164825.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10336-007-0185-6 doi (NATIONALLICENCE)springer-10.1007/s10336-007-0185-6 Hagelin Julie Department of Biology, Swarthmore College, 500 College Ave, 19081, Swarthmore, PA, USA aut The citrus-like scent of crested auklets: reviewing the evidence for an avian olfactory ornament [Elektronische Daten] [Julie Hagelin] The body odor of birds has the potential to alter fundamentally our interpretation of avian social behavior by challenging the traditional view that conspecific interactions are primarily guided by sight and sound. Here, I review studies of the crested auklet (Aethia cristatella), a socially monogamous seabird with a seasonally elevated citrusy scent associated with an unusual display behavior. Work on A. cristatella includes investigations of chemistry, social function, and adaptive value of odor. Several lines of evidence are consistent with the notion that odor acts as an olfactory ornament. First, birds exhibit a conspicuous, seasonal display (the "ruff-sniff”) that focuses on scented nape plumage, enabling odor transmission and possibly scent assessment or scent marking. Second, similar to visual ornaments such as facial crests, odor is produced shortly before the breeding season and is lost by the end. Third, crested auklets recognize and are attracted to both natural plumage odor and synthetic mixtures of chemical components. Finally, individuals respond more to male models treated with synthetic odor compounds than to scented female models or unscented controls, suggesting an emphasis of odor in social contexts involving a male. It is presently unclear whether auklet odor effectively deters ectoparasites or acts as an "honest signal” of individual quality, though odor emission rates vary between individuals and concentration appears to correlate with social rank in captivity. Future investigations are needed to reveal whether odor concentrations that mimic a single individual can protect against parasites or pathogens, as are studies of the relationship(s) between scent and secondary sexual traits, such as facial crest length. Such data promise to provide insight into the adaptive value and social function of odor. Dt. Ornithologen-Gesellschaft e.V., 2007 Body odor nationallicence Chemical signal nationallicence Chemical communication nationallicence Olfaction nationallicence Social behavior nationallicence Sexual selection nationallicence Ornament nationallicence Aethia cristatella nationallicence Journal of Ornithology Springer-Verlag 148(2007-12-01), 195-201 0021-8375 148<195 2007 148 10336 https://doi.org/10.1007/s10336-007-0185-6 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10336-007-0185-6 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Hagelin Julie Department of Biology, Swarthmore College, 500 College Ave, 19081, Swarthmore, PA, USA aut NATIONALLICENCE 773 0- Journal of Ornithology Springer-Verlag 148(2007-12-01), 195-201 0021-8375 148<195 2007 148 10336 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer