The Variable Seedeater is very common in Costa Rica, whenever there is grass either on lots or at the edge of roads. On the Caribbean side, the male is almost entirely black and looks pretty similar to the male Thick-billed Seed-Finch, but is smaller in size; on the pacific side, the male has white belly and rump. The female is drab brown, also very similar to the female Thick-billed Seed-Finch, but smaller and with duller colors. The juvenile has similar coloration to the female. In terms of behavior, it is common to see this species jumping into the air in an acrobatic fashion and then just fall in the same perch, which is part of the mating display of the male trying to attract nearby females.
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