Thursday, May 13, 2021

Pacific Wren

Pacific Wrens sing amazingly complex songs. Erika and I heard one calling from shrubs on the floor of the Woodard Bay Conservation area on 10 May 2021. We never saw the bird. We recorded the song using BirdNet on our iPhone. I was relieved that the app confirmed my identification. Researchers describe the song as one of the most complex of all birds. You can listen the our recording by clicking here.

Toews and Irwin (2020) describe the complexity of Pacific Wren songs. Each male has up to ten short song introductions. These intros are followed by up to 80 successive songs. The male, therefore, may have a repertoire of over 800 songs. Wrens are able to repeat songs. The songs are composed of syllables. In one study, the average syllable number within a song ranged from 73 to 338, with an average of 158. You may note in the song graph, Pacific Wrens can can sing simultaneous notes from their syrinx and each of their two bronchial tubes. How a male sings seems to depend on how he feels and the intensity of competition from other males. 

No comments:

Post a Comment