This was their way of honoring the dead. The story....

“ This was their way of honoring the dead. The story over, the demands of their own hard, rough lives began to re-assert themselves in their hearts, in their nerves, their blood and appetites. Would that the dead were not dead! But there is grass that must be eaten, pellets that must be chewed, hraka that must be passed, holes that must be dug, sleep that must be slept. Odysseus brings not one man to shore with him. Yet he sleeps sound beside Calypso and when he wakes thinks only of Penelope. ”

Richard Adams

From : Watership Down