Attributes / relations provided by
♦ 1Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 2Winter feeding ecology and trophic relationships of Oldsquaws and White-winged Scoters on Kachemak Bay, Alaska, Gerald A. Sanger and Robert D. Jones, Jr., Canadian Wildlife Service, 1984
♦ 3CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database
♦ 4FEEDING 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