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Tundra Swan: Hollow heow whistles and broken, crane-like bugling; generally higher and less nasal or resonant than Trumpeter. • Hollow heow whistles and broken, crane-like bugling; generally higher and less nasal or resonant than Trumpeter. • Wing sounds buzzier than Mute.
Flock:
Call:
Wing sound:
Credits:All text copyright Michael O'Brien. All sounds copyright Macaulay Library. Image copyright Brian E. Small.