Ecologic Aspects of Ectopic Populations of Monk Parakeets (Myiopsitta monachus) and Possible Agricultural Consequences

Abstract

Ectopic populations of the monk parakeet (Myiopsitta monachus), derived from birds imported for the pet trade, now exist in Puerto Rico, the New York metropolitan area, and other localities in North America. This parakeet normally occupies southern South America where it is tolerant of a wide variety of climates, habitats and food sources. It has succeeded in breeding in the northern hemisphere. The growth potential of current populations here is unknown. A review of its feeding habits provide proof that it is a potential agricultural pest. It is most undesirable to introduce exotic species to new areas. Even when a biological entity has been studied thoroughly and appears destined to become beneficial, unforeseen detrimental consequences may occur upon its establishment in a new environment. It is thus important to study the new feral populations of the parakeet in Puerto Rico very closely if eradication is not planned, but enough evidence exists to indicate that its extermination is desirable.