Question: What large shorebird found at Sand Dollar Island and Caxambas Pass has a long straight bill that appears to curve up?
Answer: The Marbled Godwit.
Marbled Godwits have straight bills, but because of the coloration, they appears to curve up. They inhabit Sand Dollar and the Caxambas Pass area in small numbers most the year.
Actually, the bird is in the genus Limosa and not in the genus Recurvirostra (shorebirds with recurved bills).