ML41668061
Iceland Gull (Thayer's x Iceland) Larus glaucoides thayeri x glaucoides/kumlieni
Участник
Peder Svingen Media from this contributor Профиль
Дата
Местоположение
Duluth--Canal Park
St. Louis, Minnesota, United States
Media from this location Иллюстрированный Список Видов- Age and sex
- Adult, Unknown sex - X
Подробности наблюдения
Adult Thayer’s Gull X Kumlien’s [Iceland] Gull at Canal Park, Duluth, Minnesota, 24 Nov 2016. At first glance, the reduced amount of pigment in the wingtip (tiny mark on outer web of p6 and no markings on p5) and less-than-true-black markings on p7-10, suggest Kumlien’s Gull. However, the white mirror on p10 is not terminal, and the white tongue-mirror on p9 does not extend completely across p9 to join the p10 mirror. Up to 20% of the Kumlien’s-type gulls of all ages that we image in the Duluth-Superior area prove to be intergrades.
Техническая информация
- Модель
- Canon EOS 7D
- Lens
- EF500mm f/4L IS USM
- ISO
- 1000
- Фокусное расстояние
- 500 mm
- Вспышка
- Flash did not fire, auto
- Диафрагма
- f/5.6
- Выдержка
- 1/640 sec
- Размеры
- 4382 pixels x 2921 pixels
- Исходный размер файла
- 8.29 MB