Birds of the World

Spoon-billed Sandpiper Calidris pygmaea Scientific name definitions

Sayam U. Chowdhury and Christoph Zöckler
Version: 2.0 — Published May 5, 2025

Behavior

Locomotion

Walking, Running, Hopping, Climbing, etc.

Information needed.

Flight

Information needed.

Swimming and Diving

Information needed.

Self-Maintenance

Preening, Head-Scratching, Stretching, Sunbathing, Bathing, Anting, etc.

Information needed.

Sleeping, Roosting

Information needed.

Agonistic Behavior

Physical and Communicative Interactions

Information needed.

Territorial Behavior

Males establish territories, and breeding pairs feed in territory, but may also visit communal feeding areas (42).

Sexual Behavior

Mating System and Operational Sex Ratio

Monogamous, usually for more than one season.

Courtship, Copulation, and Pair Bond

Males give a display flight on the breeding grounds: they rise to a height of at least 40–50 ft and circle the territory, make a series of brief dips followed by hovering with rapid wingbeats and giving the Territorial call (see Vocalizations), then punctuating this with steep curving swoops to near ground level before rising back up, or descending to the ground in a slow glide with wings held up in a 'V' (59, 21, 7).

Extra-Pair Mating Behavior/Paternity

Information needed.

Social and Interspecific Behavior

Degree of Sociality

Adults are aggressive towards conspecifics on breeding grounds.

Nonpredatory Interspecific Interactions

Occurs in large foraging flocks with other shorebirds, including Red-necked Stint (Calidris ruficollis) and Little Stint (Calidris minuta) (7).

Predation

Kinds of Predators

Predators include Arctic fox (Vulpes lagopus), red fox (Vulpes vulpes), gulls, skuas (Stercorarius spp.), Common Raven (Corvus corax), stoats (Mustela erminea), and ground squirrels (41, 60, 49).

Recommended Citation

Chowdhury, S. U. and C. Zöckler (2025). Spoon-billed Sandpiper (Calidris pygmaea), version 2.0. In Birds of the World (N. D. Sly, P. Pyle, and P. F. D. Boesman, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.spbsan1.02
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