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ML8076

Cave Swallow (Texas) Petrochelidon fulva pallida

Отчет Добавить к запросу

Участник

Robert C. Stein Media from this contributor
Robert B. Angstadt Media from this contributor

Дата

27 апр. 1961 06:00

Местоположение

ROCK SPRINGS; 'DEVIL'S SINKHOLE'
Texas, United States
Media from this location Иллюстрированный Список Видов
Возраст
Не указано
Пол
Не указано
Поведение
В полете
Воспроизведение
Не указано

Примечания

NOTES: LIMESTONE CAVERN. NOISE OF BIRDS EMERGING FROM CAVE AND FLYING OVER CAVE. AT LEAST ONE THOUSAND BIRDS WERE IN FLOCK WHICH CIRCLED. THE FLOCK DIMINISHED IN SIZE AS THE MORNING PROGRESSED, AND THE LATTER PORTION OF THE RECORDING CONTAINS FEWER BIRDS. Sex: 1000 UNKNOWN BEST TOWARD BEGINNING, LAST PART VERY LOW. [There are too many birds here to differentiate many of the vocalizations, but most of this appears to represent the clear "weet" or "cheweet" chatter described in BNA. I was also able to differentiate what appear to be "che" notes at 1:525, 2:34, 3:53, 3:56, 4:005, 4:115, 5:12, 5:125, and 5:345; songs at 1:09-1:11, 6:05-6:08 (BEST example), and 7:03-7:05; and what I believe is a lower-pitched "choo" call at 6:46.) - CAM - 26 January 2005].

Дополнительные виды

  • Northern Mockingbird Mimus polyglottos
  • Eastern Screech-Owl Megascops asio
  • Mourning Dove Zenaida macroura

Техническая информация

Видеокамера
NAGRA III-B
Микрофон
AKG Unspecified
Вспомогательная аппаратура
Parabola 101.6cm (40in)

Архивная информация

Оцифровано
8 Nov 2001 - Martha Fischer

Cornell Lab of Ornithology

Collections and Guides

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