Broad-billed Sandpiper
Calidris falcinellus
阔嘴鹬
Introduction
The broad-billed sandpiper breeds in high Arctic taiga bogs of Scandinavia and Siberia. It migrates along a south-easterly route to wintering grounds spanning from eastern Africa through south and southeast Asia to Australasia. The species was formerly placed in its own genus Limicola, but genetic research has confirmed its placement within Calidris, where it is most closely related to the sharp-tailed sandpiper. It frequently associates with dunlins and other waders.
Description
This small sandpiper measures 16-18 cm in length, placing it between the little stint and dunlin in size. Its most distinctive feature is the relatively broad, straight bill with a noticeably down-kinked tip. The legs are shorter than those of the dunlin. In breeding plumage, the upperparts are dark brown with narrow pale feather fringes, while the underparts are white with blackish breast markings. The head pattern is striking, featuring a pale crown stripe and a distinctive double or split supercilium. Winter plumage is much paler and greyer above with white underparts, resembling a winter dunlin but retaining the characteristic head pattern. Juveniles show pale 'tramlines' down the mantle but are distinguished by white flanks and belly with a brown-streaked breast.
Identification
The combination of size, bill shape, and head pattern makes this species identifiable. It is slightly smaller than the dunlin but larger than the little stint, with a longer, straighter bill that has a distinctly kinked tip—a feature not found in similar species. The double supercilium and pale crown stripe create a unique facial expression. The shorter legs compared to the dunlin and the white belly contrasting with streaked breast in juveniles help distinguish it from the little stint. The contact call—a dry whistling 'dree-it, dree-it' with a clicking 'dik dik'—is similar to the little stint and can aid identification when birds are heard before seen.
Distribution & Habitat
This strongly migratory species breeds in wet taiga bogs across two disjunct regions: northern Scandinavia and northwest Russia (C. f. falcinellus), and central and eastern Siberia (C. f. sibirica). It winters from eastern Africa through the Middle East, India, and southeast Asia to Australasia. Despite its European breeding range, it is rare on passage in western Europe due to its south-easterly migration route. It is highly gregarious, forming flocks with other scolopacid waders, particularly dunlins, on wintering grounds and during migration.
Behavior & Ecology
During the breeding season, this bird forages in soft mud on marshes, while wintering birds prefer coastal areas. It feeds mainly by sight, consuming insects and other small invertebrates. The male performs an aerial display during courtship. Pairs nest in a simple ground scrape, typically laying four eggs. The species is gregarious outside the breeding season, often joining mixed flocks of waders. Vocalizations include a distinctive contact call described as a dry, whistling 'dree-it, dree-it' and a clicking 'dik dik', similar to the little stint.
Conservation
The International Union for Conservation of Nature classifies this species as Vulnerable due to declining population trends. While the broad-billed sandpiper has a wide distribution range and large overall population, global population declines are estimated to exceed 30% over three generations. The species is protected under the Agreement on the Conservation of African-Eurasian Migratory Waterbirds, which aims to conserve migratory waterbird populations across their flyways. Habitat loss and degradation in both breeding and wintering areas are likely contributing factors to population declines.
Culture
The species holds no significant cultural or folklore traditions mentioned in available sources. Its scientific name falcinellus, meaning 'small sickle' in Latin, refers to the distinctive shape of its bill.
Source: Wikipedia · CC BY-SA 3.0
Taxonomy
- Order
- Charadriiformes
- Family
- Scolopacidae
- Genus
- Calidris
- eBird Code
- brbsan
Subspecies (2)
-
Calidris falcinellus falcinellus
breeds Scandinavia and northwestern Russia (Kanin Peninsula); winters coastal eastern Africa eastward to southern India and Sri Lanka
-
Calidris falcinellus sibirica
breeds Taymyr Peninsula (northwestern Siberia) and Lena to Kolyma rivers (northeastern Siberia); winters coastal northeastern India eastward to Australasia
Data Sources
CBR Notes: IUCN红色名录等级由LC升为VU
Species description from Wikipedia, licensed under CC BY-SA 3.0.
Bird images and sounds sourced from GBIF, contributed by citizen scientists worldwide under Creative Commons licenses.
Taxonomy data from AviList 2025.