Calidris ptilocnemis

occurs (regularly, as a native taxon) in multiple nations

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Transient

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

Global Range: (200,000 to >2,500,000 square km (about 80,000 to >1,000,000 square miles)) BREEDING: west-central Alaska, on islands in Bering Sea, in Aleutian and Shumagin Islands, and in eastern Siberia on Chukotski Peninsula and the Commander Islands. NON-BREEDING: from southern Alaska south along Pacific coast to central California; in Eurasia from Commander Islands south to northern Kurile Islands (AOU 1983).

Length: 23 cm

Weight: 83 grams

Systems

• Terrestrial
• Freshwater
• Marine

Comments: NON-BREEDING: rocky seacoasts, breakwaters, and mudflats (AOU 1983). BREEDING: Grassy or mossy tundra in coastal or montane areas (AOU 1983). Nests in the open on the ground. The nest is a depression, lined with grasses and leaves (Harrison 1978).

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: Yes. At least some populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: Yes. At least some populations of this species make annual migrations of over 200 km.

Arrives on breeding grounds in May after northward migration (Terres 1980). More northerly summer populations migrate farther south than do more southerly populations.

Comments: Forages along rocky shores feeding on crustaceans, small mollusks, insects, and worms. Also eats algae, seeds, and berries.

100,000 - 1,000,000 individuals

Comments: Morrison et al. (2001) estimated the global population at roughly about 200,000 individuals, with about 150,000 breeding in North America.

Often seen in association with black turnstones and surfbirds.

Observations: Little is known about the longevity of these animals, but they have been reported to live up to 7.3 years (Klimkiewicz and Futcher 1989). Considering the longevity of similar species, however, maximum longevity could be significantly underestimated.

Breeding begins in early June (Harrison 1978). Clutch size usually 4. Incubation about 20 days, by both sexes. Nestlings precocial and downy. Young tended by both sexes.

The following is a representative barcode sequence, the centroid of all available sequences for this species.

There are 2 barcode sequences available from BOLD and GenBank.  Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen and other sequences.

Download FASTA File

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1

Year Assessed

Assessor/s

Reviewer/s

Contributor/s

Justification

History

• 2008
  Least Concern
• 2004
  Least Concern

Canada

Rounded National Status Rank: NNA - Not Applicable

United States

Rounded National Status Rank: N5B,N5N : N5B: Secure - Breeding, N5N: Secure - Nonbreeding

Rounded Global Status Rank: G5 - Secure

Reasons: Moderately large range, populations reasonably widespread and secure within range.

Global Short Term Trend: Relatively stable (=10% change)

Comments: Morrison (1993/1994) categorized the population trend in Canada as "stable?". Paulson (1993) suggests a population decline in wintering North American birds between 1970's and late 1980's.