Petta, J.C. & Shipley, O.N. & Wintner, S.P. & Cliff, G. & Dicken, M.L. & Hussey, N.E. (2020)
Are you really what you eat? Stomach content analysis and stable isotope ratios do not uniformly estimate dietary niche characteristics in three marine predators.
Oecologia, 192, 1111–1126 DOI: 10.1007/s00442-020-04628-6