Attributes / relations provided by
♦ 1del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.).
Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 2DIET, FRUIT CHOICE AND VARIATION IN BODY CONDITION OF FRUGIVOROUS
WARBLERS IN MEDITERRANEAN SCRUBLAND, PEDRO JORDANO, Ardea 76 (1988): 193-209