The yellow-collared lovebird (Agapornis personatus), also called masked lovebird, black-masked lovebird or eye ring lovebird, is a monotypic species of bird of the lovebird genus in the parrot family Psittaculidae. They are native to Arusha Region of Tanzania and have been introduced to Burundi and Kenya. Although they have been observed in the wild in Puerto Rico, they are probably the result of escaped pets, and no reproduction has been recorded. They have also been observed in Arizona.
The yellow-collared lovebird is a mainly green small parrot about 14.5 cm (5.5 in) long. Its upperparts are a darker green than its lower surfaces. Its head is black, and it has a bright red beak with white above it and white eyerings. Yellow on the breast is continuous with a yellow collar and an expansion of yellow over the nape of the neck. Male and female have an identical external appearance.