When do Manx shearwaters arrive in and leave the UK?

A summer visitor in the records: sightings rise sharply from mid May, are near their peak by mid June, and fall away after early October.

When do Manx shearwaters arrive in the UK?

In the GBIF records, UK sightings of the Manx shearwater rise sharply from mid May and are near their peak by mid June.

When do Manx shearwaters leave the UK?

UK sightings fall away after early October.

Manx shearwater 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 52,315 UK records (occurrence search API, country=GB, weekly). Dates come from sightings, not a survey, so treat them as a guide.

See the Manx shearwater migration on the 3D globe →

About the Manx shearwater

The Manx shearwater is a medium-sized shearwater in the seabird family Procellariidae. The scientific name of this species records a name shift: Manx shearwaters were called Manks puffins in the 17th century. Puffin is an Anglo-Norman word for the cured carcasses of nestling shearwaters. …

From the Wikipedia article “Manx shearwater” (revision 1380155559), 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.