The Coefficient Of Inbreeding, or COI, commonly labeled F and expressed as a percent, is a measure of the amount of consanguinity in an individual's ancestry, in other words, how closely related its parents are. All these off springs are referred to as splits Inbreeding Coefficient Calculator. If a recessive mutation is mated to a normal coloured bird all off spring will be split to the mutated colour. The first mutation can appear in either male or female. The recessive mutation is recessive to the normal coloured bird. mode Visual splits to Visual splits to Structural (df) (sf) (df) (sf) V: violet: in: G: grey: do: Dark - Blue Chromosome (df) (sf) T1 T we call it a pastel silver, they call it cinnamon turquoise grey! They also often call olive khaki Genetic Calculator 1.3 Species: Indian Ringnecked Parrot Psittacula krameri 1.0 0.1 Symbol Mutations Inherit. for some species, particularly asiatics, it is helpful to know the european names for our mutations eg. Has some pics as well, you need to be patient and let it download. Last updates: 2019 () - Dilute mutation added for Pyrrhura Molinea and recesive grey for Quoker Parrot 2016 () - According to the international standard - recesive mutation called edge_dilute was renamed to marbled - mb in all species AVIAN GENETIC CALCULATOR is a powerful tool for breeders of many caged bird species, which tells the breeder what colour progeny and expected percentages of each will result from different bird colour matings as well as providing some on-screen photographs of many bird species and their colour mutations Mutation Gallery: Princess Parrot - blue. Mutation Gallery: Princess Parrot - NSLino.