Researchers at McGill University report that many bird species show common, “universal” vocal patterns. Across hundreds of species, the study describes recurring features such as small pitch intervals, regular and predictable rhythms, and phrase-final elongation, where the last part of a vocal phrase tends to last longer than earlier parts.
The work also finds that several of these same patterns appear in human song and speech across cultures. Phys.org highlights the specific musical and timing features that overlap between birds and people. Science Magazine emphasizes that the resemblance persists even when considering vocal learning, stating that the patterns in bird songs are independent of whether a species learns calls by learning from others, according to its summary.
