Serinus canicollis flavivertex
The yellow-crowned canary is 11–13 cm in length. The adult male has a green back with black edging to the wing feathers wings and tail. The underparts, rump and tail sides are yellow, and the lower belly is white. The head is brighter in color than the Cape canary, yellow in colour, and the face is cinnamon. The juvenile has greenish-yellow underparts with heavy brown streaking.
The yellow-crowned canary is a common and gregarious seedeater. Its call is tsit-it-it, and the song is warbled goldfinch-like trills and whistles given in display flight or from a high perch.
Arnaiz-Villena A.; Alvarez-Tejado M.; Ruiz-del-Valle V.; García-de-la-Torre C.; Varela P.; Recio M. J.; Ferre S.; Martinez-Laso J. (1999). "Rapid Radiation of Canaries (Genus Serinus)" (PDF). Molecular Biology and Evolution. 16 (1): 2–11. doi:10.1093/oxfordjournals.molbev.a026034.