The giant rat takes lids and ignores what is under them. A crock of pickled herring, a barrel of rye, a pot of lard: it lifts the cover in its front teeth, drags it off, and leaves the food for the flies. Last March Birgit Halvorsen of Oskarvik lost the birch lid of her herring crock, which she had weighted with a stone the size of a loaf. The stone turned up nine feet away, standing on end. The herring had not been touched. Birgit says only that it was a good lid.
The oldest account is a salt factor's ledger from Ingeholm, which blames eleven missing hatch covers in one winter on the apprentices and dismisses two of them. The apprentices were innocent. A generation later the coopers noticed that lids went missing only when they were birch, never when they were split, and that pine was left to rot where it lay. Cats were tried and given up. An adult giant rat runs thirty inches from nose to rump and outweighs a harbor tom by twenty pounds, and it sits through hissing the way a stone sits through rain.
Households on this coast keep one rule. At first frost each house sets a cracked birch lid on the back step. It is always cracked, never sound, because a rat handed a good lid comes back for the set. Sign is easy to read: paired hind prints with a tail drag a finger wide between them, droppings the size of acorns, and a pale dust of birch shavings at the foot of any wall with a gap. The nests smell of nothing at all, which is how people who expect a stench walk past them.
Returning to Ingeholm after six winters, I find the colony has left the boathouse cellars for the dry mill race, and the stacks have changed. The town has gone over to tin. The rats take tin when a house has no birch to give, then bury it at the bottom of the pile, out of sight, as though ashamed of it. Birgit's lid is in the stack too, near the top, with the crock's rim still pressed into the grain. The tallest stack I have measured stands five feet four inches and holds 212 lids.
- Classification
- Giant rodent, lid-hoarding
- Habitat
- Cellars, harbor warehouses, dry mill races
- Danger
- Low
- Size
- 30 inches nose to rump
- Activity
- Nocturnal
- Realm
- Northern coast towns
- Binomial
- Mus operculator
- Diet
- Grain, rendered fat, birch bark
- Temperament
- Stubborn, methodical, shy of daylight










