Modifiers matching thrush:

• migrant,
• larger,
• mimic,

Simple categories matching migrant:

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