 Slaty-backed Gull (schistisagus)
(last update: October 12, 2014) |
Many thanks to all photographers. Do you also have Slaty-backed Gulls that can be added here, please let us know. This page with links has been created to arrange a reference for this taxon, based on pictures available on the internet. Some good reference material from Japan has been deleted again from the web recently or pages simply may expire and will not be restored, making material non-available anymore. Therefore pictures have been placed on individual pages, of course always with credits to photographers in captions, and if available, also a hyperlink to the original website or blog.
The identity of a number of these birds may be questioned; although all were labelled as Slaty-backed, few of these birds may well be hybrids (e.g. Slaty-backed x Glaucous-winged or Slaty-backed x Vega). If you feel to comment on these birds, please use the ORG forum. Also, in case you find any errors, please let us know. |
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1st cycle Slaty-backed Gulls
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| Slaty-backed Gull (schistisagus) 1st cycle (1CY), September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 13 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 13 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 14 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
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| Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 20 2011, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 20 2011, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 20 2011, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), December 25 2011, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), December 26 2013, Cape Nosappu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 04 2012, Chiba Prefecture, Japan. Picture: Seichoudoku. |
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| Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 07 2012, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 17 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 17 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 17 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 17 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 17 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 17 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
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| Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 17 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 31 2010, Choshi, Japan. Picture: Gullog. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), January 21 2012, Itoshima, Fukuoka, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), February 13 2013, Rausu, Japan. Picture: Mike Buckland. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), February 19 2014, Akkeshi, Hokkaidoi, Japan. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), February 13 2013, Rausu, Japan. Picture: Mike Buckland. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 28 2008, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 15 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 04 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 04 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
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| Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st alternate (2CY), May 02 2010, Ayukawa - Kinkazan, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st alternate (2CY), May 02 2010, Ayukawa - Kinkazan, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st alternate (2CY), May 02 2010, Ayukawa - Kinkazan, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st alternate (2CY), May 02 2010, Ayukawa - Kinkazan, Japan. Picture: Shigenobu Aizawa. |
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| Slaty-backed Gull (schistisagus) 1st cycle (1CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 09 2011, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), November 07 2011, Miura Kanagawa, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), November 07 2011, Miura Kanagawa, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), November 07 2011, Miura Kanagawa, Japan. Picture: Michiaki Ujihara. |
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| Slaty-backed Gull (schistisagus) 1st cycle (1CY), November 26 2011, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 1st cycle (1CY), December 25 2013, Rausu coastline, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 1st cycle, December 27 2009 - January 04 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) 1st cycle, December 27 2009 - January 04 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) 1st cycle, December 27 2009 - January 04 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
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| Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 12 2012, Choshi, Japan. Picture: Michiaki Ujihara. |
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2nd cycle Slaty-backed Gulls
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| Slaty-backed Gull (schistisagus) 2nd cycle (2CY), July 12 2004, Chukotka, Russian Federation. Picture: Tuomo Jaakkonen. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), July 12 2004, Chukotka, Russian Federation. Picture: Tuomo Jaakkonen. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), July 12 2004, Chukotka, Russian Federation. Picture: Tuomo Jaakkonen. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
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| Slaty-backed Gull (schistisagus) 2nd cycle (2CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 2nd cycle (1CY), October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 12 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 15 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 12 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 14 2012, Monbetsu, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 19 2010, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 19 2010, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), December 26 2013, Cape Nosappu, Hokkaido, Japan. Picture: Ian Davies. |
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| Slaty-backed Gull (schistisagus) 2nd cycle (2CY), December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), February 13 2013, Rausu, Japan. Picture: Mike Buckland. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), February 17 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), February 13 2013, Rausu, Japan. Picture: Mike Buckland. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), February 13 2013, Rausu, Japan. Picture: Mike Buckland. |
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| Slaty-backed Gull (schistisagus) 2nd cycle (3CY), February 17 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), March 03 2010, Shibetsu, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), March 28 2008, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), March 28 2008, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), March 18 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), March 15 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), March 29 2008, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 2nd cycle (3CY), March 18 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), May 15 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 2nd cycle (2CY), December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), February 14 2012, Hwajinpo, South Korea. Picture: Tom Lindroos. |
Slaty-backed Gull (schistisagus) 2nd cycle (3CY), February 23 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
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3rd cycle & sub-adult Slaty-backed Gulls
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| Slaty-backed Gull (schistisagus) 3rd cycle (3CY), September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), October 17 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 3rd cycle (3CY), October 17 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), October 17 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), October 17 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
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| Slaty-backed Gull (schistisagus) 3rd cycle (4CY), January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), February 19 2014, Akkeshi, Hokkaidoi, Japan. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), February 20 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 13 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 13 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 13 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 18 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 03 2010, Shibetsu, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 15 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) sub-adult, March 07 2012, Choshi, Japan. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), May 14 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), May 02 2010, Ayukawa - Kinkazan, Japan. Picture: Shigenobu Aizawa. |
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| Slaty-backed Gull (schistisagus) 4th cycle (4CY), September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) 4th cycle (4CY), October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) hybrid? 4th cycle (4CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) sub-adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) 4th cycle (5CY), February 18 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 4th cycle (5CY), February 21 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) (sub?) adult, February 10 2009, Chijiwa, Nagasaki, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) 4th cycle (5CY), March 13 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 4th cycle (5CY), March 28 2008, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) 4th cycle (5CY), March 13 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) sub-adult, March 07 2012, Choshi, Japan. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) sub-adult, March 10 2012, Choshi, Japan. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) sub-adult, March 10 2012, Choshi, Japan. Picture: Peter Adriaens. |
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| Slaty-backed Gull (schistisagus) 3rd cycle (3CY), December 25 2013, Shibetsu Harbor, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 3rd cycle (3CY), December 25 2013, Shibetsu Harbor, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 11 2012, Choshi, Japan. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 06 2012, Choshi, Japan. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) 3rd cycle (4CY), March 12 2012, Choshi, Japan. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) 4th cycle (5CY), March 13 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) sub-adult, January 25 2011, Choshi, Japan. Picture: Terry Townshend. |
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| Slaty-backed Gull (schistisagus) sub-adult, March 07 2012, Choshi, Japan. Picture: Peter Adriaens. |
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adult Slaty-backed Gulls
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| Slaty-backed Gull (schistisagus) adult, September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) adult, September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) adult, September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) adult, September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) adult, September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) adult, September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) adult, September 16 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
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| Slaty-backed Gull (schistisagus) adult, September 15 2009, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) adult, October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) adult, October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) adult, October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) adult, October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, December 25 2013, Rausu coastline, Hokkaido, Japan. Picture: Ian Davies. |
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| Slaty-backed Gull (schistisagus) adult, December 25 2013, Rausu coastline, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) adult, December 26 2013, Cape Nosappu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) 11A-12960 13th cycle (14CY), January 07 2012, Choshi, Chiba Prefecture, Japan. Picture: Seichoudoku. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
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| Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 21 2011, Choshi, Japan. Picture: Stuart Price. |
Slaty-backed Gull (schistisagus) adult, January 21 2011, Choshi, Japan. Picture: Stuart Price. |
Slaty-backed Gull (schistisagus) adult, January 25 2011, Choshi, Japan. Picture: Terry Townshend. |
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| Slaty-backed Gull (schistisagus) adult, January 21 2011, Choshi, Japan. Picture: Stuart Price. |
Slaty-backed Gull (schistisagus) adult, January 21 2011, Choshi, Japan. Picture: Stuart Price. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, February 19 2014, Akkeshi, Hokkaidoi, Japan. |
Slaty-backed Gull (schistisagus) adult, February 19 2014, Akkeshi, Hokkaidoi, Japan. |
Slaty-backed Gull (schistisagus) adult, February 21 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, February 16 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) adult, February 21 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, February 19 2014, Akkeshi, Hokkaidoi, Japan. |
Slaty-backed Gull (schistisagus) adult, February 19 2014, Akkeshi, Hokkaidoi, Japan. |
Slaty-backed Gull (schistisagus) adult, February 14 2013, Hwajinpo, South Korea. Picture: Tom Lindroos. |
Slaty-backed Gull (schistisagus) adult, February 22 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, February 15 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, February 24 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) adult, February 17 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, February 20 2014, Choshi, Chiba, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, March 28 2008, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, March 17 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, March 03 2010, Shibetsu, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, March 27 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
Slaty-backed Gull (schistisagus) adult, March 28 2008, Nemuro, Hokkaido, Japan. Picture: Shiroto. |
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| Slaty-backed Gull (schistisagus) adult, March 08 2012, Choshi, Japan. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) adult, April 16 2012, Marinparu - Onagawa, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) adult, May 02 2010, Obakosaki, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) adult, May 02 2010, Obakosaki, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) adult, May 02 2010, Ayukawa - Kinkazan, Japan. Picture: Shigenobu Aizawa. |
Slaty-backed Gull (schistisagus) adult, May 02 2010, Ayukawa - Kinkazan, Japan. Picture: Shigenobu Aizawa. |
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| Slaty-backed Gull (schistisagus) adult, June 21 2013, Kamchatka / Chukotka Coast, Russia. Picture: Benjamin van Doren. |
Slaty-backed Gull (schistisagus) adult, September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen. |
Slaty-backed Gull (schistisagus) adult, December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) adult, December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) adult, December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) adult, December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
Slaty-backed Gull (schistisagus) adult, December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies. |
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| Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 02 2010, Choshi, Japan. Picture: Chris Gibbins. |
Slaty-backed Gull (schistisagus) adult, January 27 2011, Choshi, Japan. Picture: Terry Townshend. |
Slaty-backed Gull (schistisagus) adult, January 25 2011, Choshi, Japan. Picture: Terry Townshend. |
Slaty-backed Gull (schistisagus) adult, January 25 2011, Choshi, Japan. Picture: Terry Townshend. |
Slaty-backed Gull (schistisagus) adult, January 25 2011, Choshi, Japan. Picture: Terry Townshend. |
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| Slaty-backed Gull (schistisagus) adult, January 25 2011, Choshi, Japan. Picture: Terry Townshend. |
Slaty-backed Gull (schistisagus) adult, January 25 2011, Choshi, Japan. Picture: Terry Townshend. |
Slaty-backed Gull (schistisagus) adult, February 14 2013, Hwajinpo, South Korea. Picture: Tom Lindroos. |
Slaty-backed Gull (schistisagus) adult, March 10 2012, Choshi, Japan. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) adult, Kuril Islands, eastern Siberia. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) adult, Magadan, eastern Siberia. Picture: Peter Adriaens. |
Slaty-backed Gull (schistisagus) adult, Kamchatka, eastern Siberia. Picture: Peter Adriaens. |
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