Bat

Bats appear in John Steinbeck's The Grapes of Wrath as a quiet but telling measure of abandonment. They belong to the sequence of creatures—cats, mice, weasels, owls—that reclaim the tenant houses after the families have been forced out, and their behavior marks the precise moment when a dwelling ceases to be human shelter and becomes a hollow shell open to the elements and to wildlife.

Appearance and Behavior

In the narrative, bats are first glimpsed in a transitional outdoor scene. During the night that Tom Joad, Jim Casy, and Muley Graves spend camped beside a fire at the ruined Joad farm, the evening bats flash into the firelight and out again, part of the ordinary nocturnal life that continues around the displaced men. This brief appearance establishes the bat as a natural, unremarkable presence in the rural landscape.

The Transition from Human to Wild Space

The bat's more significant role comes in the intercalary chapter that describes what happens to the houses after the people leave. When the tenant families first depart, the hunting cats slouch in from the fields and mew on the porches; when no one comes out, they creep through the open doors and walk mewing through the empty rooms. Eventually they go back to the fields and become wild cats. Then, when night comes, the bats—which had previously stopped at the doors for fear of light—swoop into the houses and sail about through the empty rooms. In a little while they stay in dark room corners during the day, folding their wings high and hanging head-down among the rafters, and the smell of their droppings fills the empty houses.

Narrative Significance

The bat's progression from threshold to interior is a precise ecological marker. As long as a house is inhabited, the light from lamps or fires keeps bats at the door; the moment the family is gone and the lamps are never lit again, the bats cross that boundary. Their droppings, accumulating in the rafters, become part of the sensory signature of abandonment—a smell that replaces the smells of cooking, of people, of life. The bat thus functions as a small but exact instrument for registering the speed and completeness with which a lived-in home reverts to wild, unclaimed space. Alongside the mice that store weed seeds in drawers and the weasels that come to hunt them, the bat is one of the creatures that dismantle the domestic order, not by violence but by simple occupation. Its presence in the novel is brief but structurally precise: it shows that the land's human history can be erased in a season, and that nature's reclamation begins the moment the last door swings shut.