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BiologyThe blue-and-yellow tanager occurs in pairs or small groups (2), and may feed on fruits, insects and sometimes leaves (2) (8). The nest is cup-shaped and built in bushes or in the crown of tall trees, and may be lined with grass, dry vegetation and feathers. Little information is available on the breeding behaviour of the blue-and-yellow tanager, though it has been reported to lay around two to three eggs, which are white in colour, with a slight greenish-blue tint and coloured blotches or spots (3) (4). Incubation lasts around 13 days, and the breeding pair may lay more than one clutch in a season (4). The blue-and-yellow tanager is reported to be a migratory species (9), although there is a lack of detailed information on its movements. Some report it to undergo regional movements in response to food availability and climate (4).