Double-collared Seedeater

• It is one of the traditional cage birds of Brazil and Argentina, where song contests are held: that demand sustains a considerable illegal trade even though the species remains common in the wild.
• The males learn their song from their neighbours, and there are regional dialects so marked that an expert can tell where a bird comes from by its repertoire alone.
• It follows the flowering and seeding of grasses in nomadic movements, and can vanish from an area for months only to reappear when the grassland sets seed.

Skeleton type

Vertebrate - internal bony skeleton (bird)

Habitat and environment

Tall grassland, wetland margins, farmland and scrub of central and eastern South America

Birth weight

Altricial: born blind, naked or with sparse down and entirely dependent

Size at birth

Altricial: born blind, naked or with sparse down and entirely dependent

Sexual maturity

12 months

Gestation / incubation

13 days of incubation

Litter / clutch size

3 eggs

Sources consulted: https://es.wikipedia.org/wiki/Sporophila_caerulescens

Best time: From September to March in southern Brazil, Paraguay, Bolivia, Uruguay and Argentina, by day, in grassland and along roadsides.