ML616885726
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Дата
Локація
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Деталі спостереження
Hard to estimate. Attempt to give an educated guess, but most of the flock is actually perched in the forest... Started in the opening (Herrengasse), counting around 10K in a closeby tree. With 36 of these trees visible from there and a few large flocks in flight, I rounded to 400K birds there. As I was walking down to the opening, I estimated 2-3x the group seen, relying partially on trees full of birds I could see and flocks I could hear on the other side, so 1M seems a realistic estimate, although there is of course a large uncertainty on this number. Finally in the opening there were more groups perched, with maybe another 200-500K birds. At this point, I also counted (by 1K) the continuous flow of birds flying from the east and arrived to a 184K. I could easily see this number multiplied by 10 accounting for the poor visibility and the large roost size. 400K+1M+300K+200K=1.9M I could easily believe the flock to be 5-10M.
Технічна інформація
- Модель
- NIKON D500
- Об'єктив
- 500.0 mm f/5.6
- ISO
- 1600
- Фокусна відстань
- 500 mm
- Спалах
- Flash did not fire
- f-stop
- f/5.6
- Витримка
- 1/800 sec
- Розміри
- 5568 pixels x 3712 pixels
- Розмір вихідного файлу
- 533.01 KB