Modifiers matching insectivore:

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

Simple categories matching avian:

• predator,
• host,
• prey,
• protein,
• male,
• cell,
• disease,
• lineage,
• connection,
• virus,
• group,
• fauna,
• herbivore,
• scavenger,
• raptor,
• insectivore,
• serum,