Amphispiza bilineata (black-throated sparrow)
The beautiful Black-throated Sparrow (Amphispiza bilineata) calls are very quiet and very high-pitched (7500+Hz), making them difficult for some observers to hear. They have two songs: one is a delightful twinkling ramble, also sung very quietly. Both the calls and the song are on this sample, recorded 1/17/99 north of Phoenix, with the Telinga mic from only 20 feet.
Douglas Von Gausig (recordist; copyright holder), Naturesongs.com
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This material is based upon work supported by the National Science Foundation Grants DRL 0089283, DRL 0628151, DUE 0633095, DRL 0918590, and DUE 1122742. Additional support has come from the Marisla Foundation, UM College of Literature, Science, and the Arts, Museum of Zoology, and Information and Technology Services.
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