References
- Allen JA, Garland EC, Dunlop RA, Noad MJ. 2018. Cultural revolutions reduce complexity in the songs of humpback whales. Proc R Soc B Biol Sci. 285(1891):20182088. doi:https://doi.org/10.1098/rspb.2018.2088.
- Anderson MG, Brunton DH, Hauber ME. 2010. Reliable information content and ontogenetic shift in begging calls of grey warbler nestlings. Ethology. 116(4):357–365. doi:https://doi.org/10.1111/j.1439-0310.2010.01750.x.
- Bates D, Maechler M, Bolker B, Walker S 2017. Package ‘lme4ʹ: linear mixed-effects models using ‘eigen’ and S4.
- Berg KS, Beissinger SR, Bradbury JW. 2013. Factors shaping the ontogeny of vocal signals in a wild parrot. J Exp Biol. 216(2):338–345. English. doi:https://doi.org/10.1242/jeb.073502.
- Blumstein DT, Chi YY. 2012. Scared and less noisy: glucocorticoids are associated with alarm call entropy. Biol Lett. 8(2):189–192. doi:https://doi.org/10.1098/rsbl.2011.0832.
- Blumstein DT, Récapet C. 2009. The sound of arousal: the addition of novel non-linearities increases responsiveness in marmot alarm calls. Ethology. 115(11):1074–1081. doi:https://doi.org/10.1111/j.1439-0310.2009.01691.x.
- Bond AB, Diamond J. 2005. Geographic and ontogenetic variation in the contact calls of the kea (Nestor notabilis). Behaviour. 142(1):1–20. English. doi:https://doi.org/10.1163/1568539053627721.
- Boucaud ICA, Aguirre Smith MLN, Valère PA, Vignal C. 2016. Incubating females signal their needs during intrapair vocal communication at the nest: a feeding experiment in great tits. Anim Behav. 122:77–86. English. doi:https://doi.org/10.1016/j.anbehav.2016.09.021.
- Bowling DL, Garcia M, Dunn JC, Ruprecht R, Stewart A, Frommolt KH, Fitch WT. 2017. Body size and vocalization in primates and carnivores. Scientific reports 41070.
- Bradbury JW. 2003. Chapter 11, vocal communication in wild parrots. In: De Waal FBM, Tyack PL, editors. Animal Social Complexity. Cambridge, MA and London, England: Harvard University Press; p. 293–316.
- Bradbury JW, Balsby TJS. 2016. The functions of vocal learning in parrots. Behav Ecol Sociobiol. 70(3):293–312. English.
- Bradbury JW, Vehrencamp SL. 2011. Principles of animal communication. Second ed. Sunderland (MA U.S.A): Sinauer Associates Inc.
- Cardoso GC, Mamede AT, Atwell JW, Mota PG, Ketterson ED, Price TD. 2008. Song frequency does not reflect differences in body size among males in two oscine species. Ethology. 114(11):1084–1093. doi:https://doi.org/10.1111/j.1439-0310.2008.01552.x.
- Charlton BD, Reby D. 2016. The evolution of acoustic size exaggeration in terrestrial mammals. Nature communications. 7:12739.
- Charlton BD, Zhihe Z, Snyder RJ. 2009. The information content of giant panda, Ailuropoda melanoleuca, bleats: acoustic cues to sex, age and size. Anim Behav. 78(4):893–898. doi:https://doi.org/10.1016/j.anbehav.2009.06.029.
- Digby A, Bell BD, Teal PD. 2013. Vocal cooperation between the sexes in little spotted kiwi apteryx owenii. Ibis. 155(2):229–245. doi:https://doi.org/10.1111/ibi.12031.
- Ey E, Pfefferle D, Fischer J. 2007. Do age- and sex-related variations reliably reflect body size in non-human primate vocalizations? A review. Primates. 48(4):253–267. doi:https://doi.org/10.1007/s10329-006-0033-y.
- Favaro L, Gamba M, Gili C, Pessani D. 2017. Acoustic correlates of body size and individual identity in banded penguins. PLoS ONE. 12(2):2. doi:https://doi.org/10.1371/journal.pone.0170001.
- Fischer J, Noser R, Hammerschmidt K. 2013. Bioacoustic field research: a primer to acoustic analyses and playback experiments with primates. Am J Primatol. 75(7):643–663. doi:https://doi.org/10.1002/ajp.22153.
- Fischer J, Wadewitz P, Hammerschmidt K. 2016. Structural variability and communicative complexity in acoustic communication. Anim Behav. 134:229–237. doi:https://doi.org/10.1016/j.anbehav.2016.06.012.
- Fitch WT, Neubauer J, Herzel H. 2002. Calls out of chaos: the adaptive significance of nonlinear phenomena in mammalian vocal production. Anim Behav. 63(3):407–418. doi:https://doi.org/10.1006/anbe.2001.1912.
- Fletcher NH. 2000. A class of chaotic bird calls? Journal of the Acoustical Society of America. 108(2):821–826. doi:https://doi.org/10.1121/1.429615.
- Fletcher NH. 2004. A simple frequency-scaling rule for animal communication. Journal of the Acoustical Society of America. 115(5 I):2334–2338. doi:https://doi.org/10.1121/1.1694997.
- Fox J, Weisberg S, Price B, Friendly M, Hong J, Andersen R, Firth D, Taylor S, Team RC 2020. Package ‘effects’: Effect displays for linear, generalized linear, and other models.
- Galeotti P, Saino N, Sacchi R, MØller AP. 1997. Song correlates with social context, testosterone and body condition in male barn swallows. Anim Behav. 53(4):687–700. doi:https://doi.org/10.1006/anbe.1996.0304.
- Garcia M, Herbst CT, Bowling DL, Dunn JC, Fitch WT. 2017. Acoustic allometry revisited: morphological determinants of fundamental frequency in primate vocal production. Sci Rep. 7(1):10450. doi:https://doi.org/10.1038/s41598-017-11000-x.
- Hall ML, Kingma SA, Peters A. 2013. Male Songbird Indicates Body Size with Low-Pitched Advertising Songs. PLOS ONE. 8(2):e56717. doi:https://doi.org/10.1371/journal.pone.0056717.
- Higgins PJ. 1999. Higgins PJ, editor. Parrots to Dollarbird. Vol. 4. Melbourne: Oxford University Press. Handbook of Australian, New Zealand and Antarctic Birds.
- Hothorn T, Bretz F, Westfall P. 2008. Simultaneous inference in general parametric models. Biometrical Journal. 50(3):346–363. doi:https://doi.org/10.1002/bimj.200810425.
- Klenova AV. 2015. Chick begging calls reflect degree of hunger in three auk species (Charadriiformes: Alcidae). PLoS ONE. 10(11):e0140151. English. doi:https://doi.org/10.1371/journal.pone.0140151.
- Köhler J, Jansen M, Rodríguez A, Kok PJR, Toledo LF, Emmrich M, Glaw F, Haddad CFB, Rödel MO, Vences M. 2017. The use of bioacoustics in anuran taxonomy: Theory, terminology, methods and recommendations for best practice. Zootaxa. 4251(1):1–124. doi:https://doi.org/10.11646/zootaxa.4251.1.1.
- Kuznetsova A, Brockhoff PB, Christensen RHB. 2020. Package ‘lmerTest’: Tests in linear mixed effects models. Journal of Statistical Software_, 82(13):1–26. doi:https://doi.org/10.18637/jss.v082.i13.
- Liu JP, Ma LK, Zhang ZQ, Gu DH, Wang JJ, Li JJ, Gao LJ, Hou JH. 2017. Maximum frequency of songs reflects body size among male dusky warblers Phylloscopus fuscatus (passeriformes: phylloscopidae). European Zoological Journal. 84(1):186–192. doi:https://doi.org/10.1080/24750263.2017.1301578.
- Martin JP, Doucet SM, Knox RC, Mennill DJ. 2011. Body size correlates negatively with the frequency of distress calls and songs of Neotropical birds. Journal of Field Ornithology. 82(3):259–268. doi:https://doi.org/10.1111/j.1557-9263.2011.00329.x.
- Miyazaki M, Waas JR. 2003. Correlations between body size, defensive behaviour and reproductive success in male little blue penguins Eudyptula minor: implications for female choice. Ibis. 145(1):98–105. doi:https://doi.org/10.1046/j.1474-919X.2003.00126.x.
- Patel R, Mulder RA, Cardoso GC. 2010. What makes vocalisation frequency an unreliable signal of body size in birds? A study on black swans. Ethology. 116(6):554–563. doi:https://doi.org/10.1111/j.1439-0310.2010.01769.x.
- Potvin DA. 2013. Larger body size on islands affects silvereye Zosterops lateralis song and call frequency. J Avian Biol. 44(3):221–225. doi:https://doi.org/10.1111/j.1600-048X.2012.05820.x.
- R Core Team. 2019. R: a language and environment for statistical computing. Vienna (Austria):R Foundation for Statistical Computing.
- Reers H, Jacot A. 2011. The effect of hunger on the acoustic individuality in begging calls of a colonially breeding weaver bird. BMC Ecology. 11(3).
- Rodríguez RL, Araya-Salas M, Gray DA, Reichert MS, Symes LB, Wilkins MR, Safran RJ, Höbel G. 2014. How acoustic signals scale with individual body size: common trends across diverse taxa. Behav Ecol. 26(1):168–177. doi:https://doi.org/10.1093/beheco/aru174.
- Rogers TL, Ciaglia MB, Klinck H, Southwell C. 2013. Density can be misleading for low-density species: benefits of passive acoustic monitoring. PLOS ONE. 8(1):e52542. doi:https://doi.org/10.1371/journal.pone.0052542.
- Servick K. 2014. Eavesdropping on ecosystems. Science. 343(6173):834–837. doi:https://doi.org/10.1126/science.343.6173.834.
- Snaddon J, Petrokofsky G, Jepson P, Willis KJ. 2013. Biodiversity technologies: tools as change agents. Biol Lett. 9(1):1. doi:https://doi.org/10.1098/rsbl.2012.1029.
- Sugai LSM, Silva TSF, Ribeiro JW Jr, Llusia D. 2019. Terrestrial passive acoustic monitoring: review and perspectives. BioScience. 69(1):15–25. doi:https://doi.org/10.1093/biosci/biy147.
- Teixeira D, Hill R, Barth M, Maron M, van Rensburg BJ. 2020. Nest-associated vocal behaviours of the south-eastern red-tailed black cockatoo, Calyptorhynchus banksii graptogyne, and the Kangaroo Island glossy black cockatoo, C.lathami halmaturinus.Austral Ecol. doi:https://doi.org/10.1111/aec.12921.
- Teixeira D, Maron M, van Rensburg BJ. 2019. Bioacoustic monitoring of animal vocal behavior for conservation. Conservation Science and Practice. 1(8):e72. doi:https://doi.org/10.1111/csp2.72.
- Tubaro PL, Mahler B. 1998. Acoustic frequencies and body mass in new world doves. The Condor. 100(1):54–61. doi:https://doi.org/10.2307/1369896.
- Wein A, Schwing R, Huber L. 2019. Kea parrot mothers Nestor notabilis produce nest-specific calls with low amplitude and high entropy. Ibis. 162:1012–1023.
- Wein A, Schwing R, Yanagida T, Huber L. 2020. Vocal development in nestling kea parrots (Nestor notabilis). Bioacoustics.1-21. doi:https://doi.org/10.1080/09524622.2019.1705184.
- Wickham H. 2016. ggplot2: Elegant graphics for data analysis. New York: Springer-Verlag.
- Wilden I, Herzel H, Peters G, Tembrock G. 1998. Subharmonics, biphonation, and deterministic chaos in mammal vocalization. Bioacoustics. 9(3):171–196. doi:https://doi.org/10.1080/09524622.1998.9753394.
- Wyman MT, Mooring MS, McCowan B, Penedo MCT, Reby D, Hart LA. 2012. Acoustic cues to size and quality in the vocalizations of male North American bison, Bison bison. Anim Behav. 84(6):1381–1391. doi:https://doi.org/10.1016/j.anbehav.2012.08.037.