Heermann's Gull heermannii(last update:
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Coordinators: 1cy June 2cy Jan 3cy Jan adult Jan |
Heermann's Gull heermannii PB2 moult (2CY), July 09 2018, Pismo Beach, California USA. Picture: Alex Abela.See Alex's Flickr site for many more images, illustrating the plumage development in this species! Outer primaries dropped, P8 fully grown. Double moult wave in that wing stretching bird? Seems there are two active moult waves in the primaries: |