Behavioral Ecology of Vocal Diversity

动物行为计划非技术摘要标题：声乐多样性的行为生态学PI：布拉德伯里，杰克W。布拉德伯里将研究哥斯达黎加野生橙额长尾鹦鹉（Aratinga canicularis）的接触叫声。虽然每个个体似乎都有自己的变体，但来自同一社会单位的鸟类的叫声似乎是趋同的。布拉德伯里博士和同事将记录无线电跟踪野生鸟类随着时间的推移，以确定如何以及为什么呼吁改变社会关系。他们将把来自不同鸟群的联合收割机鸟组合在一个鸟舍里，监测叫声如何随着新的群体形成而变化，并监测释放到野外后的后续变化。最后，他们将合成已知鸟类叫声的数字副本，以特定的方式对其进行修改，并使用鸟类配偶的回放来确定识别任务中使用的叫声变化。鹦鹉与许多鸣禽不同，它们终生交配，使用声音信号进行社会联系而不是领土防御，并依赖大脑的不同部位进行声音交流。有证据表明，鹦鹉的叫声可能比鸣禽的歌声更接近人类的语言。布拉德伯里博士将为哥斯达黎加鹦鹉保护计划提供生态数据，并培训美国和哥斯达黎加学生作为研究的一部分。

Animal Behavior ProgramNon-technical AbstractTitle: Behavioral Ecology of Vocal DiversityPI: Bradbury, Jack W.Proposal #: 9974527Dr. Bradbury will study the contact calls of wild Orange-Fronted Parakeets (Aratinga canicularis) in Costa Rica. Although each individual appears to have its own variant, calls of birds from the same social units appear to be convergent. Dr. Bradbury and associates will record radio-tracked wild birds over time to determine how and why calls change with social affiliation. They will combine birds from different flocks in an aviary, monitor how calls change with new group formation, and monitor subsequent changes after release to the wild. Finally, they will synthesize digital copies of known birds' calls, modify them in specific ways, and use playbacks to the birds' mates to determine which variations in calls are used in recognition tasks.Little is known about how parrots use vocal learning in the wild. Parrots differ from many songbirds in mating for life, using vocal signals for social affiliation instead of territorial defense, and relying on different parts of the brain for vocal communication. Evidence suggests that parrot calls may provide closer parallels to human speech than do songbird songs. Dr. Bradbury will provide ecological data for Costa Rican parrot conservation programs, and train US and Costa Rican students as part of the study.