• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Recommended citation
BirdLife International (2024) Species factsheet: Western Gull Larus occidentalis. Downloaded from https://datazone.birdlife.org/species/factsheet/western-gull-larus-occidentalis on 24/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 24/11/2024.