Hello. I was wanting to say that "we want to feed the ducks" then discovered that the verb корми́ть has more than one perfective form. Please could you tell me whether I need to use накорми́ть or покормить in my sentence? I am guessing that it is покормить, simply because when I Googled my version of the sentence (мы хотим покормить уток), there were plenty of hits for that verb, but as my large Russian verb book only lists накорми́ть, I have doubts. Is there a significant difference in their meaning?