Modifiers matching finch:

• smaller,
• small,
• australian,
• beaked,
• northern,
• migratory,
• rare,
• migrant,
• european,

Simple categories matching migrant:

• language,
• insectivore,
• bird,
• sparrow,
• group,
• finch,
• worker,
• fish,
• songbird,
• sandpiper,
• passerine,
• thrush,
• organization,
• visa,
• warbler,
• population,
• shorebird,
• waterbird,
• labourer,