Rock Sandpiper

Calidris ptilocnemis

Order

CHARADRIIFORMES

Family

Sandpipers, Phalaropes (Scolopacidae)

Code 4

ROSA

Code 6

CALPTI

ITIS

Egg Color:

Olive to buff marked with brown



Number of Eggs:

4



Incubation Days:

20



Egg Incubator:

Both sexes



Nest Location:

On ground.



Nest Material:

Lined with grasses or leaves.



Migration:

Migratory



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General

Rock Sandpiper: Medium-sized sandpiper with scaled gray-brown and reddish-brown upperparts, dark crown, and heavily streaked white underparts with dark breast patch. Bill is slightly decurved and dark with a green base. Wings have large white stripes visible in flight. Tail has dark central stripe above and is white below. Sexes are similar. Winter adult is duller, grayer, and lacks dark cap and breast patch.

Range and Habitat

Rock Sandpiper: This species breeds along coast of western Alaska, and winters along the Pacific Coast south to Northern and Central California. There are also resident individuals along the Aleutian archipelago. These birds nest on tundra and winter on rocky shores, often with Black Turnstones and Surfbirds.

Breeding and Nesting

Rock Sandpiper: Four buff to olive eggs marked with brown are laid in a small ground hollow lined with leaves and grass. Male makes nest scrape; female adds the lining. Eggs are incubated for 20 days by both parents. Young fly at 21 days.

Foraging and Feeding

Rock Sandpiper: Feeds mainly on crustaceans, insects, and small mollusks. Probes mud or pecks for food on rocks at water's edge.

Vocalization

Rock Sandpiper: Makes a series of "tu-tu-tu-tu-tu" whistles. When breeding, utters a loud rippling "chirrup" or "prierrr."

Similar Species

Rock Sandpiper: Dunlin has solid belly patch and longer bill. Surfbird has much shorter bill.

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UnderpartsX

Belly, undertail coverts, chest, flanks, and foreneck.

UpperpartsX
Back, rump, hindneck, wings, and crown.
BreastX
The upper front part of a bird.
CapX
The area on top of the head of the bird.
CrownX
The crown is the top part of the birds head.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X