ML614351310
Přispěvatel
Datum
Lokalita
- Věk
- Nespecifikováno
- Pohlaví
- Nespecifikováno
- Hlasová provokace
- Nespecifikováno
Podrobnosti k pozorování
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.
Technické informace
- Rekordér
- Mikrofon
- Příslušenství
- Původní velikost souboru
- 2.65 MB