Plumbeous Vireo

Vireo plumbeus

The plumbeous vireo is a small North American songbird in the family Vireonidae, the vireos, greenlets, and shrike-babblers. It is found from the U. S. states of Montana and South Dakota south to Honduras. Source

Where it is now

In the last 8 weeks this bird was recorded 330 times across 4 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 North America ranged from 33°N in August to 41°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.