Premise: "A fisherman is inside of a boat rowing while a bird is perched on the front of his boat."\nHypothesis: "The fisherman is rowing backwards while a bird is perched on the front of his boat."\nDo we know that the hypothesis entailed by the premise?
Let's think step by step below.
it is not possible to tell
There is no way to know that he fisherman is rowing backwards.

.

So, the final answer is it is not possible to tell