Species: Larus glaucescens
Encyclopedia of Puget Sound
Articles:
An unintended consequence of the recovery of bald eagles (Haliaeetus leucocephalus) has been the impact on seabirds. The authors of a 2019 paper published in Ecology and Evolution suggest that the effects of bald eagle activity on a large glaucous-winged gull (Larus glaucescens) colony on Protection Island in the Strait of Juan de Fuca include the possibility of coexistence but also the possibility of gull colony extinction.

A 2017 paper in the journal Northwestern Naturalist looks at distribution patterns for Glaucous-winged Gulls across associated habitats in the Salish Sea.
A 2015 paper in the journal The Condor: Ornithological Applications describes century-long trends in Glaucous-winged Gull populations in British Columbia.

Why did all the grebes leave? Where did they go? And what does their disappearance say about the health of the Salish Sea? Seasonal declines among some regional bird species could hold important clues to the overall health of the ecosystem.

This thesis discusses the Glaucous-winged Gull (Larus glaucescens) as an indicator of ecosystem change in the Salish Sea region.

Classification
Aves
Charadriiformes
Laridae
Larus
NatureServe
Classification
Ecology and Life History
Conservation Status
LC - Least concern