However, the parallels between elephant vocal behavior and human linguistic abilities are suggestive. (journals.plos.org)
In 2007, 4 years into his research, Shapiro had enough data to start writing his thesis, «Orchestration: The movement and vocal behavior of free - ranging Norwegian killer whales.» (sciencemag.org)
«The process of learning speech requires the brain to compare feedback of current vocal behavior to a memory of target vocal sounds,» Achiro said. (sciencedaily.com)