Modifiers matching waterbird:

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

Simple categories matching herbivorous:

• pet,
• mammal,
• animal,
• rodent,
• tortoise,
• dinosaur,
• fish,
• invertebrate,
• gastropod,
• shellfish,
• crustacean,
• waterbird,
• pest,
• seafood,
• beast,
• marsupial,
• species,
• organism,
• ruminant,
• host,
• zooplankton,
• bird,
• insect,
• lizard,
• predator,
• mollusk,
• snail,
• prey,
• fauna,
• tetrapod,
• reptile,
• vertebrate,
• creature,
• arthropod,
• wildfowl,