A few people have requested that a post a few more pics of local Thayer's Gulls. Here are a couple shots from the past 2 days. Note the dark eye (about 95% of Okanagan Thayer's Gulls have dark eyes), primary pattern and colour, and head/bill/body structure and shape.
[Above: Thayer's Gull center with Herring Gulls]
[Above: 2 adult Thayer's Gulls with immature Glaucous-winged Gull]