Glaucous-winged Gull (Larus glaucescens) lives in coastal across Northwestern North America. It feeds on fish and crustaceans. Its conservation status is Least Concern.
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A glaucous-winged gull once lived beyond 37 years, the longest known for the species, after being banded as a chick in British Columbia. Most individuals are thought to reach about 15 years, but some exceed two decades; one bird in British Columbia lived more than 21 years and another in Washington survived at least 22 years and 9 months.
The gull is an exceptionally rare visitor to the Western Palearctic, with sightings recorded in Morocco, the Canary Islands and Ireland in early 2016. Its appearance in Britain has been limited to winter winters of 2006/2007 and 2008/2009, the latter at Saltholme Pools in Cleveland. That 2008/2009 sighting drew hundreds of twitchers, underscoring how unusual a North Pacific bird this is far from its usual coastal range.
Where its range meets the Western gull, the resulting Olympic Gull hybrids can outnumber pure glaucous-winged birds in Puget Sound, making identification difficult. These hybrids frequently backcross with either parent species, further blurring species boundaries. Known along the Pacific coast from British Columbia to California, they display a mix of traits from both parents, contributing to the complex hybrid zone in the region.
Glaucous-winged gulls often turn city streets into feeding grounds, readily accepting hand-outs and even ripping open unsecured garbage bags to hunt for scraps. Their diet is not limited to urban waste; they also scour the coastline for dead or weakened animals, fish and mussels. This flexible foraging habit means they are a frequent presence at municipal waste sites and beach clean-ups alike, linking human refuse with natural carrion sources.
The gull's yellow bill is marked by a red subterminal spot that sits just before the tip, a feature chicks repeatedly peck to provoke the parent's regurgitative feeding. This spot is a reliable visual cue that directs the young to the exact point where nourishment is delivered. The bill itself measures between 4.6 and 6.4 cm, a size that accommodates both the spotting and the handling of a varied diet ranging from fish to garbage.
Sources
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As the misty veil of dawn lifts over the rocky coastline, the Glaucous-winged Gull emerges, its sleek form slicing through the air with effortless elegance, its piercing cry echoing across the waves. With a subtle tilt of its wings, it rides the updrafts of warm air, a masterful navigator of the ocean's breezes, its feathers a mesmerizing mosaic of grays and whites that seem to shimmer in harmony with the sea itself. In its effortless gliding, we witness a testament to the gull's remarkable adaptability, a true monarch of the maritime realm.
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