Modifiers matching wildfowl:

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

Simple categories matching migratory:

• fish,
• creature,
• orthopteran,
• shark,
• bird,
• giant,
• wildfowl,
• waterbird,
• seabird,
• pollinator,
• animal,
• pest,
• goose,
• waterfowl,
• crustacean,
• vertebrate,
• shorebird,
• species,
• herbivore,
• host,
• predator,
• bat,
• prey,
• clupeid,
• mammal,
• songbird,
• feature,
• insect,
• finch,
• ungulate,
• cell,
• beast,
• activity,
• organism,