ML179592111
Laguntzailea
LynnErla Beegle Laguntzaile honen media Profila
Data
Kokapena
Chimney Swift Roost--Downtown Raleigh
Wake, North Carolina, United States
Kokapen honetako media fitxategiak Ilustratutako zerrendak- Adina
- Zehaztu gabea
- Sexua
- Zehaztu gabea
- Etiketak
- Habitata; Txoririk ez
Iruzkina
No Chimney Swifts visible - just the habitat (roost chimney), satellite view, 215 S McDowell St, Raleigh, Wake, NC. Note the small hole compared to the large chimney; it's amazing that they pour into this so rapidly!
Behaketaren xehetasunak
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.
Informazio teknikoa
- Dimentsioak
- 718 pixels x 520 pixels
- Fitxategiaren tamaina originala
- 137.57 KB