Normal (wild-type)
A variant of Indian ringneck parakeet (Psittacula krameri)

Representative Indian ringneck parakeetphoto — a dedicated image of this exact morph isn't available yet.
The wild-type Indian ringneck: a lime/grass-green bird, the cock developing a black-and-rose neck ring at around 2-3 years. The baseline against which all mutations are measured.
Keeper tips for this variant
Provide plenty of out-of-cage flight and rotated foraging toys; ringnecks are intelligent and turn feather-pluckers or noisy when under-stimulated.