Techniques for differentiating pellets of short-eared owls and Northern HarriersHOLT, D. W; LYON, L. J; HALE, R et al.The condor (Los Angeles, CA). 1987, Vol 89, Num 4, pp 929-931, issn 0010-5422Article

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Sex ratio variation in a parasitic wasp. I: Reaction normsANTOLIN, M. F.Evolution. 1992, Vol 46, Num 5, pp 1496-1510, issn 0014-3820Article

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