"blˈuː bˈɜːd" wʌz hˌæmɐsˈækiz fˈɜːst sˈɪŋɡəl təbi sˈɜːɾᵻfˌaɪd plˈætɪnəm sˈɪns tˈuː θˈaʊzənd fˈaɪv "hˈɛvən" ænd wʌz hɜː lˈæst sˈɪŋɡəl tʊ ɐtʃˈiːv plˈætɪnəm stˈæɾəs ʌntˈɪl mˈɪɹoːɹkəl wˈɜːld tˈuː θˈaʊzənd ˈeɪt.
"Blue Bird" was Hamasaki's first single to be certified platinum since 2005's "Heaven" and was her last single to achieve platinum status until Mirrorcle World (2008).