A first cycle Larus glaucescens in it's pre alternate 1 molt. Observed in Oceano, California
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/32541690@N02">Alan Vernon</a>
CC BY 2.0
originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/32541690@N02/4371049919">Glaucous-winged gull - First winter</a>