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.
♦ 2On the accuracy of the pellet analysis method to estimate the food intake in the Antarctic shag, Phalacrocorax bransfieldensis, Ricardo J. CASAUX, Folia Zool. – 52(2): 167–176 (2003)
♦ 3Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005).
Host-Parasite Database of the Natural History Museum, London