| azerbaijan | baku city | larus argentatus | species | 0 | 1 |
| canada | british columbia | larus argentatus | species | 0 | 1 |
| canada | manitoba | larus argentatus | species | 0 | 1 |
| canada | new brunswick | larus argentatus | species | 3 | 1 |
| canada | newfoundland and labrador | larus argentatus | species | 0 | 1 |
| canada | nova scotia | larus argentatus | species | 0 | 1 |
| canada | ontario | larus argentatus | species | 0 | 12 |
| canada | prince edward island | larus argentatus | species | 1 | 0 |
| canada | quebec | larus argentatus | species | 0 | 1 |
| chile | atacama region | larus argentatus | species | 0 | 1 |
| denmark | | larus argentatus argentatus | subspecies | 3 | 0 |
| estonia | | larus argentatus | species | 3 | 0 |
| estonia | laeaene county | larus argentatus | species | 4 | 0 |
| estonia | laeaene county | larus argentatus omissus | subspecies | 7738 | 0 |
| finland | | larus argentatus | species | 2 | 0 |
| finland | uusimaa region | larus argentatus | species | 1 | 0 |
| france | | larus argentatus argenteus | subspecies | 1 | 0 |
| france | bretagne region | larus argentatus | species | 3 | 2 |
| france | bretagne region | larus argentatus argenteus | subspecies | 5 | 0 |
| germany | | larus argentatus | species | 1 | 0 |
| germany | brandenburg | larus argentatus | species | 2 | 0 |
| germany | lower saxony | larus argentatus | species | 0 | 1 |
| germany | saarland | larus argentatus | species | 0 | 1 |
| germany | saxony | larus argentatus | species | 0 | 1 |
| germany | schleswig-holstein | larus argentatus | species | 0 | 1 |
| germany | schleswig-holstein | larus argentatus argenteus | subspecies | 2 | 0 |
| iceland | | larus argentatus | species | 4 | 0 |
| iceland | | larus argentatus argenteus | subspecies | 10 | 0 |
| iceland | capital region | larus argentatus | species | 5 | 0 |
| iceland | capital region | larus argentatus argenteus | subspecies | 10 | 0 |
| iceland | eastern region | larus argentatus | species | 0 | 1 |
| italy | campania region | larus argentatus | species | 0 | 1 |
| kazakhstan | almaty city | larus argentatus | species | 0 | 1 |
| kazakhstan | atyrau region | larus argentatus | species | 0 | 1 |
| mongolia | dornod province | larus argentatus | species | 0 | 1 |
| mongolia | tov province | larus argentatus | species | 0 | 1 |
| netherlands | | larus argentatus | species | 1 | 0 |
| netherlands | | larus argentatus argenteus | subspecies | 1 | 0 |
| netherlands | north holland province | larus argentatus argenteus | subspecies | 2 | 0 |
| norway | finnmark county | larus argentatus | species | 1 | 0 |
| norway | more og romsdal county | larus argentatus | species | 0 | 3 |
| norway | more og romsdal county | larus argentatus argenteus | subspecies | 0 | 1 |
| norway | oslo county | larus argentatus | species | 0 | 1 |
| norway | rogaland county | larus argentatus | species | 0 | 1 |
| norway | troms county | larus argentatus | species | 4 | 0 |
| norway | troms county | larus argentatus argenteus | subspecies | 3 | 0 |
| norway | vest-agder county | larus argentatus | species | 2 | 0 |
| norway | vest-agder county | larus argentatus argenteus | subspecies | 3 | 0 |
| poland | | larus argentatus | species | 1 | 0 |
| poland | kuyavia pomerania province | larus argentatus | species | 3 | 0 |
| poland | pomorskie province | larus argentatus | species | 3 | 0 |
| russia | astrakhan oblast | larus argentatus | species | 0 | 1 |
| russia | krasnodar krai | larus argentatus | species | 0 | 1 |
| russia | murmansk oblast | larus argentatus | species | 1 | 2 |
| sweden | | larus argentatus argentatus | subspecies | 4 | 0 |
| sweden | blekinge | larus argentatus | species | 0 | 1 |
| sweden | stockholm | larus argentatus | species | 1 | 0 |
| sweden | vastra gotaland | larus argentatus | species | 1 | 0 |
| united kingdom | england | larus argentatus | species | 0 | 1 |
| united kingdom | england | larus argentatus argenteus | subspecies | 2 | 0 |
| united kingdom | scotland | larus argentatus | species | 0 | 1 |
| united kingdom | wales | larus argentatus | species | 0 | 3 |
| united states | alaska | larus argentatus | species | 4 | 1 |
| united states | connecticut | larus argentatus | species | 0 | 1 |
| united states | florida | larus argentatus | species | 0 | 1 |
| united states | maine | larus argentatus | species | 1 | 2 |
| united states | massachusetts | larus argentatus | species | 16 | 3 |
| united states | michigan | larus argentatus | species | 0 | 12 |
| united states | new hampshire | larus argentatus | species | 0 | 2 |
| united states | new jersey | larus argentatus | species | 0 | 3 |
| united states | new york | larus argentatus | species | 0 | 6 |
| united states | north carolina | larus argentatus | species | 0 | 1 |
| united states | oregon | larus argentatus | species | 0 | 1 |
| united states | washington | larus argentatus | species | 0 | 1 |
| united states | wisconsin | larus argentatus | species | 0 | 4 |