The latter are exchanged during infancy for a hen of your own. Both types are hazardous, as they will grow into warped versions of our own hens if left in the coop. Aside from the peril presented by their eggs, goblin hens are dangerous enough on their own, having tempers nearly as quick as their razor-sharp beaks. To keep goblins from approaching your coop voluntarily, it is advised to keep the place as spic and span as possible. A thorough cleaning every two weeks will keep your chickens happy and healthy and repel potential miscreants from calling the little house their own, as they prefer dwellings similar to their kingdom's murky, subterranean haunts.
Nothing spoils a carefully prepared breakfast like the cracking of a changeling egg.
While so many of these horrifying eggs look and feel perfectly normal, they have repulsive qualities that are seldom noticed until it is time to eat. Some are filled with maggots, others with blood. There are reports of changeling eggs as hard as concrete, and some that explode when cracked. A few have beautiful shells that hatch tuberculosis and pneumonia. The Ungerslud family of Cornwall was the unlucky recipient of a goblin curse via changeling eggs, for the morning after the eggs were cracked and eaten, the entire clan woke up with their legs on backward, as they remain today.