Geese, and swans also, travel in a similar manner, but then they are seen to take their flight. The flocks, forming a point, move along with great impetus, much, indeed, after the manner of our Liburnian beaked galleys; and it is by doing so that they are enabled to cleave the air more easily than if they presented to it a broad front. The flight gradually enlarges in the rear, much in the form of a wedge, presenting a vast surface to the breeze, as it impels them onward; those that follow place their necks on those that go before, while the leading birds, as they become weary, fall to the rear. Storks return to their former nests, and the young, in their turn, support their parents when old. It is stated that at the moment of the swan's death, it gives utterance to a mournful song;[1] but this is an error, in my opinion, at least I have tested the truth of the story on several occasions. These birds will eat the flesh of one another.