A new analysis in Science of more than 116,000 bird songs has revealed that the astonishing variety of passerine birdsong is built from just eight basic acoustic motifs, like trills, whistles, and harmonic notes.
The findings also reveal that local environments greatly shape how birds communicate around the world. Learn more: https://t.co/3oaQ0sKQfJ
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The pectoralis muscle orientation as an indicator of the modes of wing‐propelled locomotion in birds - Akeda - Journal of Anatomy - Wiley Online Library https://t.co/2RMM71tGgb