Attributes / relations provided by
♦ ¹FEEDING BEHAVIOR AND DIET OF THE LONG-BILLED CURLEW AND WILLET, LYNNE E. STENZEL, HARRIET R. HUBER, AND GARY W. PAGE, THE WILSON BULLETIN - Vol. 88, No. 2, June 1976
♦ ²del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.