YOU SAID:

i will eat a duck while also eating a bird

INTO JAPANESE

また鳥を食べながら鴨を食べる

BACK INTO ENGLISH

Also while eating a bird eats duck

INTO JAPANESE

食べながら、鳥はアヒルを食べる

BACK INTO ENGLISH

While eating a bird eats duck

INTO JAPANESE

食べながら、鳥はアヒルを食べる

BACK INTO ENGLISH

While eating a bird eats duck