@article {53325,
	title = {Components of variation in female common cuckoo calls},
	journal = {Behavioural Processes},
	year = {2018},
	month = {Jan-10-2018},
	abstract = {<p>Investigations on bird vocalizations have largely focused on males. Female vocalizations are widespread in birds but few studies have investigated female vocal characteristics, particularly in non-Passeriformes. In this study, we use new field recordings from China, and calls available from an online sound library to examine temporal patterns, call consistency and geographical variation in vocalizations of female common cuckoos Cuculus canorous. The peak in vocal activity (both male and female) was in the morning, which contrasts to what would be predicted if the sole function of the female call was to distract the attention of hosts after parasitizing a host\&rsquo;s nest in the afternoon. Both male and female common cuckoos were more vocally active in sunny weather, than rainy weather. We also found larger intra-individual variation in female rather than in male calls, which may benefit female cuckoos by increasing stimulation to host species. Peak frequency of female calls decreased with increased latitude, while differences in female call features were not associated with geographic distance. In summary, our findings that female calls are used in the morning, rather than at peak egg laying, yet are highly variable and show little geographic patterns suggest that the function of these female calls may be more variable and intricate than previously thought. However, because research on female vocalizations is underrepresented, future studies are still needed.</p>
},
	keywords = {acoustic signals, call consistency, common cuckoo, female vocalization, geographical variation, vocal activity},
	issn = {03766357},
	doi = {10.1016/j.beproc.2018.10.007},
	url = {https://linkinghub.elsevier.com/retrieve/pii/S0376635718302997https://api.elsevier.com/content/article/PII:S0376635718302997?httpAccept=text/xmlhttps://api.elsevier.com/content/article/PII:S0376635718302997?httpAccept=text/plain},
	author = {Deng, Zhuqing and Lloyd, Huw and Xia, Canwei and Liang, Wei and Zhang, Yanyun}
}
@article {50508,
	title = {The acoustic repertoire of the Atlantic Forest Rocket Frog and its consequences for taxonomy and conservation (Allobates, Aromobatidae)},
	journal = {ZooKeys},
	volume = {692},
	year = {2017},
	month = {Sep-08-2018},
	pages = {141 - 153},
	abstract = {<p>The use of acoustic signals is a common characteristic of most anuran species to mediate intraspecific communication. Besides many social purposes, one of the main functions of these signals is species recognition. For this reason, this phenotypic trait is normally applied to taxonomy or to construct evolutionary relationship hypotheses. Here the acoustic repertoire of five populations of the genus Allobates from the Brazilian Atlantic Forest are presented for the first time, on a vulnerable to extinction Neotropical taxon. The description of males\&rsquo; advertisement and aggressive calls and a female call emitted in a courtship context are presented. In addition, the advertisement calls of individuals from distinct geographical regions were compared. Differences in frequency range and note duration may imply in taxonomic rearrangements of these populations, once considered distinct species, and more recently, proposed as a single species, Allobates olfersioides. Calls of the male from the state of Rio de Janeiro do not overlap spectrally with calls of males from northern populations, while the shorter notes emitted by males from Alagoas also distinguishes this population from the remaining southern populations. Therefore, it is likely that at least two of the junior synonyms should be revalidated. Similarities among male advertisement and female calls are generally reported in other anuran species; these calls may have evolved from a preexisting vocalization common to both sexes. Male aggressive calls were different from both the male advertisement and female calls, since it was composed by a longer and multi-pulsed note. Aggressive and advertisement calls generally have similar dominant frequencies, but they have temporal distinctions. Such patterns were corroborated with the Atlantic Forest Rocket Frogs. These findings may support future research addressing the taxonomy of the group, behavioral evolution, and amphibian conservation.</p>
},
	keywords = {Anuran communication, bioacoustics, conservation, female vocalization, taxonomy},
	issn = {1313-2989},
	doi = {10.3897/zookeys.692.12187},
	url = {https://zookeys.pensoft.net/articles.php?id=12187},
	author = {Forti, Lucas Rodriguez and da Silva, Tha{\'\i}s Renata {\'A}vila and Lu{\'\i}s Felipe Toledo}
}
