After Buarque wrote the original lyrics, he traveled to Italy, and, while he was away, Jobim added a last verse, which was included in the performance at the Festival but was not well received.
[1] The sabiá is a songbird (Rufous-bellied thrush in English) and the national bird of Brazil.
Buarque's lyrics allude to the sabiá in the famous Brazilian poem "Canção do exílio", written in 1843 by Gonçalves Dias.
It appeared as the B-side of Sinatra's single "Lady Day" (Reprise 0970) in December 1970, and was later included on Portrait of Sinatra – Forty Songs from the Life of a Man (1977), Sinatra–Jobim Sessions (1979) and Sinatra/Jobim: The Complete Reprise Recordings (2010).
The Song Is You: A Singer's Art, music critic Will Friedwald questions why "Sabiá" was ever left off the original album, calling it "a soft, mystical piece on the order of the first album's 'Dindi'.... revealing Jobim as a Brazilian Billy Strayhorn."