Dull-colored Grassquit

Asemospiza obscura

The dull-colored grassquit is a small bird in the family Thraupidae, the tanagers and allies. It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru and Venezuela. Source

Where it is now

In the last 8 weeks this bird was recorded 3,293 times across 3 areas (each area is a 5 degree square).

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Movement and weather

Over the weeks it was present in the past year, its centre in South America ranged from 2°S in September to 6°N in July, about 900 km apart.

Arrival dates

The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.