When do great northern divers arrive in and leave the UK?

A winter visitor in the records: numbers build from mid October and stay high until about late May.

When do great northern divers arrive in the UK?

In the GBIF records, UK numbers build from mid October.

When do great northern divers leave the UK?

They stay common in the records until about late May.

Where do great northern divers go in summer?

In June and July the strongest signal in the effort-adjusted GBIF records is around Iceland. The globe shows the breeding range month by month.

Common loon 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 32,056 UK records (occurrence search API, country=GB, weekly). Dates come from sightings, not a survey, so treat them as a guide.

See the common loon migration on the 3D globe →

About the common loon

The common loon or great northern diver is a large member of the loon, or diver, family of birds. …

From the Wikipedia article “Common loon” (revision 1379678186), 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 winter visitors: see the full list with arrival and departure dates.