Baa baa black sheep

Baa baa black sheep has a lot to answer for.  In my opinion, sheep do not say "baa.". Lambs do not say "baa". Lambs calling for their mum do not say baa, nor do ewes looking for their lambs. So, what do they say? Maaaaaa.  Listen carefully and you might hear  Muuuum were are you? I am hungry/cold/lonely. Muuuuum, where are you? I need a cuddle.