Sunday, November 9, 2014

Nov 9--Iceland Gull (Kumlien's) in Penticton

With more coverage there would likely be more of these turning up (especially on the coast) but since many are not photographed I thought I'd post this one I found this afternoon along Okanagan Beach in Penticton. Unfortunately this is the only usable photo I managed (Digi-scoped).

First cycle Iceland (Presumed Kumlien's) Gull with adult California Gull. Right after this photo was taken a fire-cracker-type noise flushed all the gulls. Will post updates if it sticks around. (Photo: Russell Cannings)

ID Features that makes this an Kumlien's Gull (the Canadian form of Iceland Gull):

  • Uniform pale plumage (i.e. Primaries do not contrast with mantle) eliminated Thayer's, Herring, California, Ring-billed, Mew.
  • This is aged as a "First Cycle" (Born this summer) based on fresh and neatly patterned plumage. Second cycles would be paler and look more washed out. Bill would likely be showing more pale pink by second-cycle as well. We use "cycle" to refer to the molt sequence as this does not always line up with specific seasons or "breeding/non-breeding"
  • Small body size and bill size/shape eliminated Glaucous-winged and Glaucous
  • In general, Iceland Gulls are smaller/paler versions of Thayer's Gulls; averaging smaller billed, more rounded head.
  • You can also think of them as mini Glaucous Gulls. 
  • Even with the above notes, these guys can be tricky to ID as gull complexes have so may variables (sexual dimorphism, hybrids, subspecies, etc)

3 comments:

  1. Great about the Iceland. For those of us that find junior Gulls hard, could you tell us what to look for in an Iceland?

    ReplyDelete
  2. Posted some pointers above Clive. Unfortunately I don't have any more angles. Much of the size/shape can be derived by comparing it to the California adjacent. Hope this helps somewhat.

    ReplyDelete
  3. Very cool Russ you are on a roll with your recent finds!

    ReplyDelete