Rozell, Ned. "The Raven's Game of Hide and Seek". Alaska Science Forum. Geophysical Institute, University of Alaska Fairbanks. Archived from the original on 2007-06-11. Retrieved 2007-05-07.
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Feldman, Christopher R.; Omland, Kevin E. (March 2005). "Phylogenetics of the common raven complex (Corvus: Corvidae) and the utility of ND4, COI and intron 7 of the β-fibrinogen gene in avian molecular systematics". Zoologica Scripta. 34 (2): 145–156. doi:10.1111/j.1463-6409.2005.00182.x. S2CID85196387.
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Olendorff, R. R. (1976). "The food habits of North American golden eagles". American Midland Naturalist. 95 (1): 231–236. doi:10.2307/2424254. JSTOR2424254.
Gwinner, Eberhard (April 1965). "Beobachtungen über Nestbau und Brutpflege des Kolkraben (Corvus corax L.) in Gefangenschaft". Journal of Ornithology (in German). 106 (2): 145–178. Bibcode:1965JOrni.106..145G. doi:10.1007/BF01793758. S2CID22796437.
Heinrich, Bernd (1988). "Winter foraging at carcasses by three sympatric corvids, with emphasis on recruitment by the raven, Corvus corax". Behavioral Ecology and Sociobiology. 23 (3): 141–156. Bibcode:1988BEcoS..23..141H. doi:10.1007/BF00300349. S2CID10471307.
Kijne, M.; Kotrschal, K (2002). "Neophobia affects choice of food-item size in group-foraging common ravens (Corvus corax)". Acta Ethologica. 5 (1): 13–18. doi:10.1007/s10211-002-0061-6. S2CID39984855.
Larsen, Kenneth H.; Dietrich, John H. (January 1970). "Reduction of a raven population on lambing grounds with DRC-1339". Journal of Wildlife Management. 34 (1): 200–204. doi:10.2307/3799509. JSTOR3799509.
Bogoras, W. (1902). "The Folklore of Northeastern Asia, as Compared with That of Northwestern America". American Anthropologist. 4 (4): 577–683. doi:10.1525/aa.1902.4.4.02a00020.
Gwinner, Eberhard (April 1965). "Beobachtungen über Nestbau und Brutpflege des Kolkraben (Corvus corax L.) in Gefangenschaft". Journal of Ornithology (in German). 106 (2): 145–178. Bibcode:1965JOrni.106..145G. doi:10.1007/BF01793758. S2CID22796437.
Heinrich, Bernd (1988). "Winter foraging at carcasses by three sympatric corvids, with emphasis on recruitment by the raven, Corvus corax". Behavioral Ecology and Sociobiology. 23 (3): 141–156. Bibcode:1988BEcoS..23..141H. doi:10.1007/BF00300349. S2CID10471307.
Olendorff, R. R. (1976). "The food habits of North American golden eagles". American Midland Naturalist. 95 (1): 231–236. doi:10.2307/2424254. JSTOR2424254.
Larsen, Kenneth H.; Dietrich, John H. (January 1970). "Reduction of a raven population on lambing grounds with DRC-1339". Journal of Wildlife Management. 34 (1): 200–204. doi:10.2307/3799509. JSTOR3799509.
Feldman, Christopher R.; Omland, Kevin E. (March 2005). "Phylogenetics of the common raven complex (Corvus: Corvidae) and the utility of ND4, COI and intron 7 of the β-fibrinogen gene in avian molecular systematics". Zoologica Scripta. 34 (2): 145–156. doi:10.1111/j.1463-6409.2005.00182.x. S2CID85196387.
Gwinner, Eberhard (April 1965). "Beobachtungen über Nestbau und Brutpflege des Kolkraben (Corvus corax L.) in Gefangenschaft". Journal of Ornithology (in German). 106 (2): 145–178. Bibcode:1965JOrni.106..145G. doi:10.1007/BF01793758. S2CID22796437.
Heinrich, Bernd (1988). "Winter foraging at carcasses by three sympatric corvids, with emphasis on recruitment by the raven, Corvus corax". Behavioral Ecology and Sociobiology. 23 (3): 141–156. Bibcode:1988BEcoS..23..141H. doi:10.1007/BF00300349. S2CID10471307.
Kijne, M.; Kotrschal, K (2002). "Neophobia affects choice of food-item size in group-foraging common ravens (Corvus corax)". Acta Ethologica. 5 (1): 13–18. doi:10.1007/s10211-002-0061-6. S2CID39984855.
Rozell, Ned. "The Raven's Game of Hide and Seek". Alaska Science Forum. Geophysical Institute, University of Alaska Fairbanks. Archived from the original on 2007-06-11. Retrieved 2007-05-07.