Related Clues:

• Pens, possibly
• Where to get down?
• Characters in a Tchaikovsky ballet
• V formers
• Trumpeters or mutes
• Long-necked swimmers
• Canada and snow, e.g.
• Lake flock
• V formation members
• Silly folks
• Seventh-day Christmas gift
• You can get down from them
• Six layers of a song?
• They flock together
• Certain Tchaikovsky ballet characters