Least sandpiper

Calidris minutilla

The least sandpiper (Calidris minutilla) is the smallest shorebird. The genus name is from Ancient Greek kalidris or skalidris, a term used by Aristotle for some grey-colored waterside birds.
Least Sandpiper  Calidris minutilla,Geotagged,Least sandpiper,Summer,United States

Appearance

This species has greenish legs and a short, thin, dark bill. Breeding adults are brown with dark brown streaks on top and white underneath. They have a light line above the eye and a dark crown. In winter, Least sandpipers are grey above. The juveniles are brightly patterned above with rufous colouration and white mantle stripes.

This bird can be difficult to distinguish from other similar tiny shorebirds; these are known collectively as "peeps" or "stints". In particular, least sandpiper is very similar to its Asian counterpart, long-toed stint. It differs from that species in its more compact, shorter-necked appearance, shorter toes, somewhat duller colours, and stronger wingbar.* Jonsson, Lars & Peter J. Grant Identification of stints and peeps ''British Birds'' 77:293-315
Least sandpiper (Calidris minutilla) Cabo Rojo Peninsula, Puerto Rico. Nov 20, 2024 Calidris minutilla,Fall,Geotagged,Least sandpiper,Puerto Rico

Reproduction

Their breeding habitat is the northern North American continent on tundra or in bogs. They nest on the ground near water. The female lays four eggs in a shallow scrape lined with grass and moss. Both parents incubate; the female leaves before the young birds fledge and sometimes before the eggs hatch. The young birds feed themselves and are able to fly within two weeks of birth.

They migrate in flocks to the southern United States and northern South America. They occur as very rare vagrants in western Europe.
Least Sandpiper Not too much going on at the Nisqually estuary today, but I've found a good place to put on the return to list. In winter it may be possible to see a number of different migrating ducks, loons and raptors.  Calidris minutilla,Geotagged,Least sandpiper,United States

Food

These birds forage on mudflats, picking up food by sight, sometimes by probing. They mainly eat small crustaceans, insects and snails.
Least Sandpiper Eating brine flies. Goto Meer, Bonaire. Calidris minutilla,Caribbean Netherlands,Geotagged,Least sandpiper,Summer

Migration

Their breeding habitat is the northern North American continent on tundra or in bogs. They nest on the ground near water. The female lays four eggs in a shallow scrape lined with grass and moss. Both parents incubate; the female leaves before the young birds fledge and sometimes before the eggs hatch. The young birds feed themselves and are able to fly within two weeks of birth.

They migrate in flocks to the southern United States and northern South America. They occur as very rare vagrants in western Europe.

References:

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Status: Least concern
EX EW CR EN VU NT LC
Taxonomy
KingdomAnimalia
DivisionChordata
ClassAves
OrderCharadriiformes
FamilyScolopacidae
GenusCalidris
SpeciesC. minutilla