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Variation in Kumlien's Iceland Gulls -
Page 3 of 3 |
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Bluffers
Park in Toronto |
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Scroll
down for 7 photos of second and first winter birds. Only one in
first winter plumage. Where are the first winter birds? |
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14. Kumlien's Iceland Gull in second winter
plumage has bicoloured bill and is acquiring grey upperparts. Bluffers Park on 30 January 2011.
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15. Kumlien's Iceland Gull
with bicoloured bill in second winter plumage. Bluffers Park on 31
January 2011. |
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16. Kumlien's Iceland Gull
with bicoloured bill in second winter plumage has not yet molted in
bluish grey adult-like upperparts feathers as on some second winter
birds. Bluffers Park on
25
January 2011. Revised 3 February 2011. |
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17. Kumlien's Iceland Gull
with bicoloured bill in second winter plumage has not yet molted in
bluish-grey upperparts as on some second winter birds. Bluffers Park
on 30
January 2011. Revised 3 February 2011. |
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18. Kumlien's Iceland Gull in second winter
plumage has very checkered appearance, all white primaries, and
bicoloured bill. Bluffers Park on 30 January 2011. |
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19. Kumlien's Iceland
Gull in second winter plumage has not yet molted in bluish-grey
upperparts as on some second winter birds. . Bicoloured bill. Bluffers
Park on 25 January 2011. Revised 3 February 2011. |
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20. Foreground: Iceland Gull
in first winter plumage with mostly black bill and all pale primary
wingtips is
more like nominate
Larus glaucoides
glaucoides,
but probably impossible to identify to subspecies.
This is the only bird in
first winter plumage. Where are the first winter birds? Revised 3
February 2011 |
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21. Back: Winter adult
with very slight grey in white primary wingtips and it has light
pigmentation in the irides putting it very close to nominate L.
g. glaucoides on the clinal continuum. L. g. glaucoides
is casual in Ontario and there is an adult specimen from Ottawa in
the Canadian Museum of Nature. Bluffers Park on 29 January 2011.
Revised 3 February 2011. |
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Links |
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Kumlien's Iceland Gulls at Ashbridges Bay
in Toronto on 5 and 14 February 2010 |
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Kumlien's
Iceland
Gulls and a Coyote at Ashbridges Bay in
Toronto, 15 February 2010. |
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Kumlien's Iceland Gulls
at Bluffers Park in
Toronto on 18 February 2008. |
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Taxonomic History of Thayer's Gull
includes information on
Kumlien's Gull. |
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I welcome suggestions about aging:
jean.iron@sympatico.ca |
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End of Page 3 |
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