Calidrids or Typical Waders
The calidrids or typical waders are a group of Arctic-breeding, strongly migratory wading birds. These birds form huge mixed flocks on coasts and estuaries in winter. They are the typical "peeps", small to medium-sized, long-winged and relatively short-billed.
Their bills have sensitive tips which enable them to locate buried prey items, which they typically seek with restless running and probing.
The species, according to updated / traditional taxonomy, are as follows:
- Genus Calidris sensu stricto - knots
- Surfbird, Calidris virgatus / Aphriza virgata
- Great Knot, Calidris tenuirostris
- Red Knot, Calidris canutus
Other calidrids (all at some time placed in Calidris too)
- Stints - possibly genus Erolia
- Semipalmated Sandpiper, "Calidris" pusilla
- Little Stint, "Calidris" minuta
- Least Sandpiper, "Calidris" minutilla
- White-rumped Sandpiper, "Calidris" fuscicollis
- Baird's Sandpiper, "Calidris" bairdii
- Dunlin, "Calidris" alpina
- Red-necked Stint, "Calidris" ruficollis
- Long-toed Stint, "Calidris" subminuta
- Pectoral Sandpiper, "Calidris" melanotos
- Sanderling, "Calidris" alba ("Crocethia alba")
- Western Sandpiper, "Calidris" mauri
- Purple Sandpiper, "Calidris" maritima
- Rock Sandpiper, "Calidris" ptilocnemis
- Temminck's Stint, "Calidris" temminckii
- Buff-breasted Sandpiper, "Tryngites" subruficollis
- Genus Philomachus
- Ruff, Philomachus pugnax
- Broad-billed Sandpiper, Philomachus falcinellus / Limicola falcinellus ("Erolia falcinella")
- Sharp-tailed Sandpiper, Philomachus acuminatus / Calidris acuminata
- Genus Micropalama (doubtfully valid; Erolius sensu stricto?)
- Stilt Sandpiper, Micropalama himantopus / Calidris himantopus
- Genus Eurynorhynchus (doubtfully valid)
- Spoon-billed Sandpiper, Eurynorhynchus pygmeus
- incertae sedis (Erolia sensu stricto?)
- Curlew Sandpiper, ?Calidris ferruginea
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