ML482616231
Автор
Scott Ray Медіа від цього автора Профіль
Дата
Локація
Hummingbird House - Stanley Home
Mountrail, North Dakota, United States
Медіа з цієї локації Ілюстрований чеклист- Вік
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Деталі спостереження
This bird first appeared yesterday and was identified as Selasphorus sp. After sifting through hundreds of photos looking for some that might show any of the published clues used to separate the two nearly identical species, Rufous and Allen's Hummingbird, I am fairly confident that this is a Rufous. Many of the field marks are extremely subtle. Allen's trademark pin-shaped R5 feather only occur in the adult male. So being an imm bird adds to the identification difficulty. I believe it is an imm male. Separating the two species is all in the tail feathers, particularly their shapes. The slight dent in the lateral vein of R2 seems to be the only diagnostic indication of a Rufous instead of Allen's at this age.
Технічна інформація
- Модель
- Canon EOS R5
- Об'єктив
- RF800mm F11 IS STM + EXTENDER RF1.4x
- ISO
- 20000
- Фокусна відстань
- 1120 mm
- Спалах
- Flash did not fire
- f-stop
- f/16.0
- Витримка
- 1/800 sec
- Розміри
- 3539 pixels x 2366 pixels
- Розмір вихідного файлу
- 2.72 MB