Modifiers matching sandpiper:

• larger,
• migrant,
• small,

Simple categories matching migrant:

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