Modifiers matching giant:

• corporate,
• jurassic,
• local,
• past,
• armored,
• transnational,
• commercial,
• marine,
• prehistoric,
• industrial,
• extinct,
• respected,
• migratory,
• flying,

Simple categories matching migratory:

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