Modifiers matching bat:

• large,
• migratory,
• little,
• young,

Simple categories matching migratory:

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