ML179739341
Contributeur
LynnErla Beegle Fichiers multimédias de ce contributeur Profil
Date
Site d'observation
Chimney Swift Roost--Downtown Raleigh
Wake, North Carolina, United States
Fichiers multimédias de cet endroit Liste illustrée- Âge
- Non précisé
- Sexe
- Non précisé
- Comportements
- En vol
- Sons
- Cri de vol
- Repasse
- Non précisé
Commentaires
Recorded 19:17 EDT as they were entering a roost chimney and swirling around; over 3,000 CHSW present.
Détails de l'observation
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.
Informations techniques
- Enregistreur
- Microphone
- Accessoires
- Taille originale du fichier
- 3 MB