Island tameness

Natural tendency of behaviour as a result of a lack of predators and prolonged geographic isolation

Island tameness is the tendency of many populations and species of animals living on isolated islands to lose their wariness of potential predators, particularly of large animals. The term is partly synonymous with ecological naïveté, which also has a wider meaning referring to the loss of defensive behaviors and adaptations needed to deal with these "new" predators. Species retain such wariness of predators that exist in their environment; for example, a Hawaiian goose retains its wariness of hawks, but does not exhibit such behaviors with mammals or other predators not found on the Hawaiian Islands. The most famous example is the dodo, which owed its extinction in large part to a lack of fear of humans, and many species of penguin.

This keyword could refer to multiple things. Here are some suggestions: