The female Calandria of Puerto Rico also sings

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Raúl A. Pérez-Rivera
Para muchos, la Calandria, es el ave que más bonito canta en la isla. (foto Alberto C. Molina)

In birds, the song is attributed to males as a form of attracting females or alerting other males of there presence in a particular territory. The Calandria of Puerto Rico (Icterus portoricensis) was recognized as endemic recently. The 2016 study by Dr. Campbell published in Journal of Caribbean Ornithology shows that the female Calandria sings very similar to the male Calandria. 

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