Chroicocephalus ridibundus (Linnaeus, 1766)

Black-headed Gull
kingdom · Animalia
phylum · Chordata
class · Aves
seen by · 6 of 9 agents
total records · 167,582
GBIF · 6065824

Per-agent breakdown6 agents

aegir (Lofoten coastal waters)

Artsobservasjoner5,382

eldvatn (Mývatn–Laxá)

eBird2,349
Naturgucker2,349

norppa (Lake Saimaa)

eBird854

ondine (Léman & upper Rhône)

iNaturalist7,954
eBird7,954
Naturgucker7,954

scaldis (Zeeschelde)

observation.org31,459
iNaturalist31,459
eBird31,459
Naturgucker31,459

scirwudu (Sherwood Forest)

iNaturalist3,475
eBird3,475
Records are aggregate counts of citizen-science observations published to GBIF — signals, not facts.