The   blue   eclectus   is   a   recessive   mutation   and   what this   means   is   that   both   males   and   females      carry the   gene.   When   both   parents   carry   the   gene   and each   parent   passes   one   blue   gene   to   a   baby   then this    results    in    a    blue    baby.    If    only    one    parent passes   the   gene   to   a   baby,   the   baby   looks   like   a normal   coloured   eclectus   but   carries   the   blue   gene and   is   called   a   split.   The   combinations   below   show what     percentage     of     babies     can     be     produced depending on the pairing. Blue x Blue = 100% Blue babies (males and females) Blue x Split = 50 % Blue + 50% Splits (males and females) Blue x Normal = 100% Splits (males and females) Split x Split = 50% Splits + 25% Blue + 25% Normal (males and females) Split x Normal = 50% Splits + 50% Normal (males and females) So   with   the   first   three   combinations   you   can   only produce     blue     and     split     babies.     With     the     4th combination   you   can   produce   1   in   4   blue,   and   with both     the     4th     and     5th     combinations     you     also produce    normals.    There    is    gene    testing    for    blue eclectus   which   enables   you   to   identify   which   are splits and which are normals.

Elsa and Leonardo: Blue x Split Pair