ML179587261
Přispěvatel
LynnErla Beegle Média od tohoto přispěvatele Profil
Datum
Lokalita
Chimney Swift Roost--Downtown Raleigh
Wake, North Carolina, United States
Média z této lokality Rozšířený seznam druhů- Věk
- Nespecifikováno
- Pohlaví
- Nespecifikováno
- Chování
- Letící
- Tagy
- Habitat; Žádný pták
Poznámky
Time 19:21 EDT continuing to enter chimney about 10 per second. The actual hole is very small in this chimney, so they all enter at the same point. This is the N&O retired chimney on 215 S McDowell Street, as seen from a parking garage on Salisbury south of Hargett.
Podrobnosti k pozorování
Conservative estimate, based on counting 100x100 of swirling flock. The swifts entered the chimney at 215 South McDowell (News & Observer) from 7:14 until 7:30. About 10 per second entered the chimney over a period of 15 minutes. There were breaks in between where they were swirling, so another estimate was based on 500 birds entering the chimney per minute for a total of 7 active minutes. They started the entry at 7:14 and the last bird entered at 7:30.See photos.
Technické informace
- Model
- COOLPIX S7000
- ISO
- 800
- Ohnisková vzdálenost
- 71.4 mm
- Blesk
- Flash did not fire, auto
- Clonové číslo
- f/6.2
- Expoziční čas
- 1/15 sec
- Rozměry
- 2048 pixels x 1536 pixels
- Původní velikost souboru
- 601.45 KB