Possible Clues:

• Owls and eagles
• Flying creatures
• Jays, e.g
• Pigeons and pelicans
• Members of bevies and broods
• A volery of ___
• Duck, duck, goose, e.g
• “Edward, I thought I said no more ____” (Twelve Days of Christmas [Correspondence], John Julius Norwich (seventh day))
• Eagles and falcons
• Owls and ostriches