Fauna
Bird

Glaucous-winged Gull

Larus glaucescens

Glaucous-winged Gulls are large pale-backed gulls whose gray wing tips closely match the mantle rather than appearing black. Adults have heavy yellow bills with red spots, while young birds are mottled brown-gray and gradually whiten with age.

gullcoastal birdpale wingtips
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & preyFish, mussels, crabs
Predators
  • eagles
  • large owls
  • mammalian carnivores
ThreatsFishing-line entanglement, plastic ingestion, contaminants, colony disturbance, and changing food supply
HabitatsRocky coasts, estuaries, islands, beaches, harbors, rivers, lakes, and urban shorelines
Life spanOften fifteen to twenty years, with some banded birds living longer
  1. OrderCharadriiformes
  2. FamilyLaridae
  3. GenusLarus
  4. SpeciesLarus glaucescens
Range data is not available yet.
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Do not feed gulls or enter colonies where adults defend nests and chicks.
Responsible observation
  • Identify: Compare the pale gray wing tips with the similarly colored back.
  • Observe: Keep food secured and watch from outside nesting or roosting groups.
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