Modifiers matching wildfowl:

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

Simple categories matching resident:

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