This is more of a rhyme. Use pointer finger and thumb for Babies’ beaks, clap hands for Mummy’s beak and closed hands (knuckles representing toothless gums) for Granny’s beak, clap hands from the elbow for Daddy’s beak, pointer finger for the worm, arms for flapping wings and rub your tummy for happy birds who’ve got their worm.
Baby bird do do do do do do x2
Mummy bird do do do do do do x2
Daddy bird do do do do do do x2
Granny bird mm mm mm mm mm mm x2
Wiggly worm woo woo woo woo woo woo x2
Flying down swoop swoop swoop swoopy swoop x2
Happy bird yum yum yum yum yummy yum x2