I have noticed that the vowel /ɜː/ (as in the RP pronunciation of "BIRD") sounds the same as the schwa [ə] (as in the pronunciation of "BUTTER" in RP). I assume the BIRD vowel is a bit longer than [ə] and occurs in stressed syllables and has the same quality as [ə]:
- /ɜː/ = [əː]
And looking the word BIRD up in Lexico added to my doubts, Lexico gives /bəːd/ (Cambridge gives /bɜːd/, BTW).
My question is: Is /ɜː/ realized as [əː] in modern RP?
