Some of these birds are difficult to identify because of the similarity between species, and various breeding, non-breeding, juvenile and moulting plumages.

The species usually considered as stints or peeps are:

Semipalmated Sandpiper

• Order: Charadriiformes
• Family: Scolopacidae
  • Genus: Calidris (part)
    • Semipalmated Sandpiper, Calidris pusilla
    • Western Sandpiper, Calidris mauri
    • Red-necked Stint, Calidris ruficollis
    • Little Stint, Calidris minuta
    • Temminck's Stint, Calidris temminckii
    • Long-toed Stint, Calidris subminuta
    • Least Sandpiper, Calidris minutilla
    • White-rumped Sandpiper, Calidris fuscicollis
    • Baird's Sandpiper, Calidris bairdii