Modifiers matching insectivore:

• terrestrial,
• mammalian,
• flying,
• nocturnal,
• small,
• smaller,
• native,
• avian,
• migrant,

Simple categories matching nocturnal:

• creature,
• animal,
• organism,
• amphibian,
• insectivore,
• gecko,
• song,
• behavior,
• cat,
• pest,
• mammal,
• fauna,
• insect,
• predator,
• snake,
• fish,
• pollinator,
• lepidopteran,
• species,
• prey,
• denizen,
• marsupial,
• varmint,
• lizard,
• raptor,
• crustacean,
• feeder,
• reptile,
• carnivore,
• rodent,
• critter,
• form,
• invertebrate,
• lemur,
• bird,
• movement,
• bug,
• disturbance,
• scavenger,
• activity,
• inhabitant,