Contrary to "popular" belief the "small" vessel of oil (as immortalized in the children's song Kad Kattan and others), was NOT small at all. It was about 4 liters (~1 gallon) big. This was the amount of oil required to light the Menorah for one single day.

So the "dove" that Noah sent out, would have needed to be big as a Roc, to have carried a "branch" to make that much oil. ;-)