The randy cherub of The Byrds, creator of unique vocal harmonies. The most envelope-pushing Byrd, tinkering with the song form, and with content. The band's rejection of the menage à trois of "Triad" caused him to quit for Crosby, Stills, and Nash; the Byrds replaced him with a horse's ass on the Notorious Byrd Brothers LP cover. Co-wrote "Wooden Ships" with Jefferson Airplane. Later on, he was noted for his drug addictions and subsequent rehab stints and prison terms.