Nominate (Green)
A variant of Fischer's Lovebird (Agapornis fischeri)

Representative Fischer's Lovebirdphoto — a dedicated image of this exact morph isn't available yet.
The wild-type: green body, orange-red face fading to yellow on the chest, with a bright red beak and white eye-ring. All mutations derive from this base.
Keeper tips for this variant
Provide a constant calcium block and abundant chew material — these active birds need an aviary or large flight, and lone pets become nippy without daily interaction.