1. North American subspecies of tundra swan having a soft whistling note
   - Cygnus columbianus columbianus

Derived forms: whistling swans

Type of: Cygnus columbianus, tundra swan

Encyclopedia: Whistling swan

• stumble
• stumblebum
• stumbler
• stumbling block
• stumm
• stump
• stump speech
• stump spud
• stumpage
• stumper
• stumping
• stumpknocker
• stumpy
• stun
• stun baton
• stun gun
• stung
• stunned
• stunner
• stunning
• stunningly
• stunsail
• stunt
• stunt flier
• stunt flying