Henslow's Sparrow

Centronyx henslowii

Henslow's sparrow is a North American passerine bird in the family Passerellidae. It was named by John James Audubon in honor of John Stevens Henslow. It was originally classified in the genus Emberiza and called Henslow's bunting. Source

Where it is now

In the last 8 weeks this bird was recorded 435 times across 10 areas (each area is a 5 degree square).

See the Henslow's Sparrow on the live map

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.

Download every area as CSV

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