YOU SAID:
I went to the park to feed the ducks
INTO JAPANESE
私はアヒルに餌を与えるために公園に行きました
BACK INTO ENGLISH
I went to the park to feed ducks
INTO JAPANESE
私はアヒルを食べるために公園に行った
BACK INTO ENGLISH
I went to the park to eat ducks
INTO JAPANESE
私はアヒルを食べるために公園に行った
BACK INTO ENGLISH
I went to the park to eat ducks
That didn't even make that much sense in English.