John V. Moore, Niels Krabbe, Olaf Jahn, M. Lysinger, P. Coopmans, P. Mena V., A. Spencer, R. S. Ridgely, J. Nilsson, D. F. Lane, N. Athanas, L. Navarrete, John V. Moore, John
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Peregrine Falcon Sounds, All About Birds, Cornell Lab of Ornithology
Bird Songs & Sounds : Free Download, Borrow, and Streaming : Internet Archive