Both are acceptable, but because it is recent, the present perfect is better.
Student or Learner
Friend: Where have you been?
Me: I have been feeding the chickens.
I would like to ask if it is OK to use 'have been feeding' or should I use 'I was feeding the chickens'?
In casual conversation, I'd just say 'Feeding the chickens'.
Can I say that "the chickens were very huge size than before, because they have been feded by me"?
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
What about this now?
"the chickens were very bigger than before, because I have been to feed them"?