Behavior/Health Concerns: Peach-faced lovebirds can be nippy and territorial, so daily handling and reinforcement of good behavior is necessary. Lovebirds can overindulge in seed, so provide plenty of fresh fruits, vegetables, whole grains and exercise. A pellet bird diet is ideal as a base for nutrition, but peach-faced lovebirds can sometimes be reluctant to accept a pelleted diet unless weaned onto it as a baby. Mix seeds and pellets over a period of time to get peach-faced lovebirds accustomed to pellets. Peach-faced lovebirds are expert escape artists. Make sure every opening on its cage is latched shut to prevent any unwanted escapes. A peach-faced lovebird's age can be determined by the color of its beak. Adults have a red, orange, light gray or horn-colored beak, depending on the species. Juvenile peach-faced lovebirds have black-marked beaks. The exception is in the black-collared lovebird, which has a gray-black beak as an adult.