The Cooper's Sandpiper, Tringa/ Calidris cooperi, is considered a new sandpiper species that was first described in 1858 based on a specimen collected in 1833 on Long Island, New York.
A similar bird was collected in 1981 at Stockton, New South Wales, Australia.
These are probably hybrids between the Curlew Sandpiper ("Calidris" ferruginea) and the Sharp-tailed Sandpiper (Philomachus acuminatus/Calidris acuminata).
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