ML179592111
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LynnErla Beegle Энэ хэрэглэгчийн медиа Профайл
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Байршил
Chimney Swift Roost--Downtown Raleigh
Wake, North Carolina, United States
Энэ байршлын медиа Зургийн Жагсаалт- Нас
- Тодорхойлоогүй
- Хүйс
- Тодорхойлоогүй
- Тэмдэглэгээ
- Амьдрах орчин; Шувуу байхгүй
Медиа тэмдэглэл
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!
Ажиглалтын дэлгэрэнгүй
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.
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