Lovebirds, Agapornis, and African lovebirds are terms that can refer to nine different species of lovebird parrots. Peach faced lovebirds are sometimes named by their color mutations: pied lovebirds, violet lovebirds, Dutch blue lovebirds, normal peach face lovebirds, orange face lovebirds, and mauve lovebirds, to name a few. These lovebirds all belong to the species Agapornis roseicollis. Love birds are about the size of a toilet role, and weigh about a pound fully grown. Lovebirds and Masked lovebirds are DIFFERENT species of lovebirds, Inter-species breeding sometimes results in mules (that is, lovebirds that cannot reproduce), but when it doesn't, the consequence is pollution of the pure gene pool for these various species of lovebirds. There are several other species of lovebirds, commonly known as black-cheeked lovebirds, black-collared lovebirds (Agapornis Swindernia), Madagascar lovebirds Nyasa lovebirds (A. lilianae), Abyssian lovebirds (Agapornis taranta), and Red-Faced Lovebirds. These species are relatively rare in American aviculture (although the black-cheek lovebird is more common than the others). Love birds are very social animals and enjoy the company of humans.