TY - JOUR T1 - Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri) AU - Mazzoni, D. AU - Borray-Escalante, N. A. AU - Ortega-Segalerva, A. AU - Arroyo, L. AU - González-Solís, J. AU - Senar, J. C. PY - 2019 VL - 42 IS - 2 JF - Animal Biodiversity and Conservation