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pectoral sandpiper
The pectoral sandpiper (''Calidris melanotos'') is a small, migratory wader that breeds in North America and Asia, wintering in South America and Oceania. It eats small invertebrates. Its nest, a hole scraped in the ground and with a thick lining, is deep enough to protect its four eggs from the cool breezes of its breeding grounds. The pectoral sandpiper is long, with a wingspan of .
==Taxonomy==
The pectoral sandpiper is sometimes separated with the "stint" sandpipers in ''Erolia''. This may or may not represent a good monophyletic group, depending on the placement of the phylogenetically enigmatic curlew sandpiper (''"C." ferruginea''), the type species of ''Erolia''. In any case, the genus name ''Ereunetes''—formerly used for the western sandpiper (''"C." mauri'') and semipalmated sandpiper (''"C." pusilla''), which are also members of the stint clade—was established before ''Erolia''.
"Cox's sandpiper" (''"Calidris"'' × ''paramelanotos'') is a stereotyped hybrid between this species and the curlew sandpiper. This does not prove a particularly close relationship between these two species, as far more distantly related waders have successfully hybridized. In any case, among the stint clade the red-necked stint (''"C." ruficollis'') and the long-toed stint (''"C." subminuta'') are particularly close relatives of the pectoral sandpiper.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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