When do grasshopper warblers arrive in and leave the UK?

A summer visitor in the records: sightings jump in mid April and fall away after early August.

When do grasshopper warblers arrive in the UK?

In the GBIF records, UK sightings of the common grasshopper warbler rise sharply from mid April and are near their peak by mid April.

When do grasshopper warblers leave the UK?

UK sightings fall away after early August.

Where do grasshopper warblers go in winter?

From December to February the strongest signal in the effort-adjusted GBIF records is around France and Estonia. The globe shows the whole winter range month by month.

Common grasshopper warbler in the UK, month by month

Bars: this species’ share of all UK bird records in GBIF (CC0/CC BY 4.0 only), by month, scaled to the peak month. Based on 23,042 UK records (occurrence search API, country=GB, weekly). Dates come from sightings, not a survey, so treat them as a guide.

See the common grasshopper warbler migration on the 3D globe →

About the common grasshopper warbler

The common grasshopper warbler or just grasshopper warbler is a species of Old World warbler in the genus Locustella. It breeds across much of temperate Europe and the western Palearctic. It is migratory, wintering across northern tropical Africa just south of the Sahara, and also locally in India.

From the Wikipedia article “Common grasshopper warbler” (revision 1361101315), CC BY-SA 4.0, shortened at a sentence end. Winter/summer areas: country containing the monthly hotspot of effort-adjusted GBIF records, using Natural Earth boundaries (public domain).

Other UK summer visitors: see the full list with arrival and departure dates.