Modifiers matching waterbird:

• plus,
• larger,
• feral,
• large,
• common,
• threatened,
• beautiful,
• coastal,
• colonial,
• migratory,
• rare,
• wild,
• higher,
• breeding,
• migrant,
• herbivorous,
• majestic,
• small,
• size,

Simple categories matching plus:

• wildfowl,
• instrument,
• ride,
• waterbird,
• event,