Drummond, William Henry (1908). The Great Fight. Preface by May Harvey Drummond. [S.l.]: G. P. Putnam's Sons. pp. xi, 81–86. Consultado em 1 de fevereiro de 2008
Martínez del Rio, C.; Baker, H. G.; Baker, I. (1992). «Ecological and evolutionary implications of digestive processes: Bird preferences and the sugar constituents of floral nectar and fruit pulp». Birkhäuser. Experientia. 48 (6): 544–551. ISSN0014-4754. doi:10.1007/bf01920237
Brugger, Kristin E.; Nelms, Curtis O. (1991). «Sucrose avoidance by American robins (Turdus migratorius): Implications for control of bird damage in fruit crops». Butterworth-Heinemann. Crop Protection. 10 (6): 455–460. Bibcode:1991CrPro..10..455B. ISSN0261-2194. doi:10.1016/s0261-2194(91)80110-2
Rodríguez-Robles, J. A. (2002). «Feeding ecology of North American gopher snakes (Pituophis catenifer, Colubridae)». Biological Journal of the Linnean Society. 77 (2): 165–183. doi:10.1046/j.1095-8312.2002.00098.x
Nagorsen, D. W.; Morrison, K. F.; Forsberg, J. E. (1989). «Winter diet of Vancouver Island marten (Martes americana)». Canadian Journal of Zoology. 67 (6): 1394–1400. doi:10.1139/z89-198
Taylor, W. P. (1954). «Food habits and notes on life history of the ring-tailed cat in Texas». Journal of Mammalogy. 35 (1): 55–63. JSTOR1376073. doi:10.2307/1376073
Lavin, S. R.; Van Deelen, T. R.; Brown, P. W.; Warner, R. E.; Ambrose, S. H. (2003). «Prey use by red foxes (Vulpes vulpes) in urban and rural areas of Illinois». Canadian Journal of Zoology. 81 (6): 1070–1082. doi:10.1139/z03-088
Morneau, F.; Lépine, C.; Décarie, R.; Villard, M. A.; DesGranges, J. L. (1995). «Reproduction of American robin (Turdus migratorius) in a suburban environment». Landscape and Urban Planning. 32 (1): 55–62. Bibcode:1995LUrbP..32...55M. doi:10.1016/0169-2046(94)00177-5
Olendorff, Richard R. (1976). «The Food Habits of North American Golden Eagles». American Midland Naturalist. 95 (1): 231–236. JSTOR2424254. doi:10.2307/2424254
Campbell, R. W.; MacColl, M. D. (1978). «Winter foods of snowy owls in Southwestern British Columbia». The Journal of Wildlife Management. 42 (1): 190–192. JSTOR3800714. doi:10.2307/3800714
Welte, S. C.; Kirkpatrick, C. E. (1986). «Syngamiasis in juvenile American Robins (Turdus migratorius), with a note on the prevalence of other fecal parasites». Avian Diseases. 30 (4): 736–9. JSTOR1590578. PMID2949729. doi:10.2307/1590578
Voelker G, Rohwer S, Bowie RC, Outlaw DC (2007). «Molecular systematics of a speciose, cosmopolitan songbird genus: Defining the limits of, and relationships among, the Turdus thrushes». Molecular Phylogenetics and Evolution. 42 (2): 422–34. Bibcode:2007MolPE..42..422V. PMID16971142. doi:10.1016/j.ympev.2006.07.016
Brugger, Kristin E.; Nelms, Curtis O. (1991). «Sucrose avoidance by American robins (Turdus migratorius): Implications for control of bird damage in fruit crops». Butterworth-Heinemann. Crop Protection. 10 (6): 455–460. Bibcode:1991CrPro..10..455B. ISSN0261-2194. doi:10.1016/s0261-2194(91)80110-2
Morneau, F.; Lépine, C.; Décarie, R.; Villard, M. A.; DesGranges, J. L. (1995). «Reproduction of American robin (Turdus migratorius) in a suburban environment». Landscape and Urban Planning. 32 (1): 55–62. Bibcode:1995LUrbP..32...55M. doi:10.1016/0169-2046(94)00177-5
Taylor, W. P. (1954). «Food habits and notes on life history of the ring-tailed cat in Texas». Journal of Mammalogy. 35 (1): 55–63. JSTOR1376073. doi:10.2307/1376073
Olendorff, Richard R. (1976). «The Food Habits of North American Golden Eagles». American Midland Naturalist. 95 (1): 231–236. JSTOR2424254. doi:10.2307/2424254
Campbell, R. W.; MacColl, M. D. (1978). «Winter foods of snowy owls in Southwestern British Columbia». The Journal of Wildlife Management. 42 (1): 190–192. JSTOR3800714. doi:10.2307/3800714
Welte, S. C.; Kirkpatrick, C. E. (1986). «Syngamiasis in juvenile American Robins (Turdus migratorius), with a note on the prevalence of other fecal parasites». Avian Diseases. 30 (4): 736–9. JSTOR1590578. PMID2949729. doi:10.2307/1590578
Welte, S. C.; Kirkpatrick, C. E. (1986). «Syngamiasis in juvenile American Robins (Turdus migratorius), with a note on the prevalence of other fecal parasites». Avian Diseases. 30 (4): 736–9. JSTOR1590578. PMID2949729. doi:10.2307/1590578
Martínez del Rio, C.; Baker, H. G.; Baker, I. (1992). «Ecological and evolutionary implications of digestive processes: Bird preferences and the sugar constituents of floral nectar and fruit pulp». Birkhäuser. Experientia. 48 (6): 544–551. ISSN0014-4754. doi:10.1007/bf01920237
Brugger, Kristin E.; Nelms, Curtis O. (1991). «Sucrose avoidance by American robins (Turdus migratorius): Implications for control of bird damage in fruit crops». Butterworth-Heinemann. Crop Protection. 10 (6): 455–460. Bibcode:1991CrPro..10..455B. ISSN0261-2194. doi:10.1016/s0261-2194(91)80110-2