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.
♦ 2R. W. Summers , S. Smith , M. Nicoll & N. K. Atkinson (1990)
Tidal and sexual differences in the diet of Purple Sandpipers Calidris maritima in Scotland, Bird Study, 37:3, 187-194
♦ 3Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005).
Host-Parasite Database of the Natural History Museum, London