The cock has a grey-green crown, nape, scapulars, mantle under tail and back. A grey- green moustache from the mandible around to the ear coverts. Rump and upper tail are yellow. The forehead, eye stripe, cheek, throat and breast are a rich yellow. The hen is generally duller in colour and has a necklace of black spots across the throat.
Juveniles are similar in colour to the hens including the necklace.
Only adult males sing but all juveniles will sing. These birds should not be kept with Grey, Large Green Singers, or other Fringillidae or Carduelinae species because they will hybridise. Mixed collections should avoid other yellow birds with Singers. They may be kept as trios. A good, basic, dry seed finch mix is best.