Boat-billed Flycatcher

Megarynchus pitangua

The boat-billed flycatcher is a large member of the family Tyrannidae, the tyrant flycatchers. It is found in Mexico, in every Central American country, on Trinidad, and in every mainland South American country though only as a vagrant in Chile. Source

Where it is now

In the last 8 weeks this bird was recorded 44,220 times across 27 areas (each area is a 5 degree square).

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Movement and weather

Each season it is first heard regularly where daytime highs are around 30°C (typically 29 to 31°C, from 8 areas). That holds across 50° of latitude, which suggests its timing follows temperature more than the calendar.

Over the weeks it was present in the past year, its centre in South America ranged from 18°S in March to 4°N in November, about 2,500 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.