Attributes / relations provided by
♦ 1Cirtwill, Alyssa R.; Eklöf, Anna (2018), Data from: Feeding environment and other traits shape
species' roles in marine food webs, Dataset, https://doi.org/10.5061/dryad.1mv20r6
♦ 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