Modifiers matching wildfowl:

• migratory,
• breeding,
• plus,
• herbivorous,
• aquatic,
• ornamental,
• dead,
• resident,

Simple categories matching resident:

• applicant,
• bird,
• ungulate,
• animal,
• cell,
• mammal,
• game,
• songbird,
• herbivore,
• organism,
• fish,
• waterfowl,
• activity,
• care,
• pet,
• prey,
• pathogen,
• predator,
• wildfowl,
• amphibian,
• visa,
• program,
• item,
• rodent,
• seabird,