Sapphire-spangled Emerald

Chionomesa lactea

The sapphire-spangled emerald is a species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is regularly found in Bolivia, Brazil, Peru, and Venezuela; as a vagrant in Argentina; and has possibly occurred in Ecuador. Source

Where it is now

In the last 8 weeks this bird was recorded 363 times across 5 areas (each area is a 5 degree square).

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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.