Male and female Trumpeter Swans provide the characteristics deep, trumpeting “oh-OH” call, with the 2nd syllable emphasized. The call is softer and more nasal-sounding as soon as made v the mouth closed. Trumpeter Swans contact to keep the pair or family members together, to protect territories, or to sound one alarm. Both sexes also use a flat-toned, single-syllable “hoo” call to situate each other. Younger swans do a higher-pitched call, and also develop their adult ton by the time they’re 6-8 months old.
Trumpeter Swans slap the water aggressively v their large webbed feet as soon as approaching one intruder. Their wings and also feet additionally slap the water’s surface throughout takeoff.
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