Modifiers matching waterbird:

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

Simple categories matching plus:

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