Buff-breasted Sandpiper

Calidris subruficollis

The buff-breasted sandpiper is a small shorebird. The species name subruficollis is from Latin subrufus, "reddish" and collis, "-necked/-throated". It is a calidrid sandpiper, notable for its long annual migration, from the arctic region of North America to the pampas region of South America. Source

Where it is now

In the last 8 weeks this bird was recorded 346 times across 10 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.