Modifiers matching bat:

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

Simple categories matching migratory:

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