Harris Philip Zeigler, Hans-Joachim Bischof.Exploring the Image // Vision, Brain, and Behavior in Birds / Nalbach Hans-Ortwin; Wolf-Oberhollenzer, Friedericke; Remy Monika. — MIT Press, 1993. — P. 25—46. — 448 p. — ISBN 026224036X.
Varela, F. J.; Palacios, A. G.; Goldsmith T. M.Color vision of birds // Vision, Brain, and Behavior in Birds / Harris Philip Zeigler, Hans-Joachim Bischof. — MIT Press, 1993. — P. 77—94. — 448 p. — ISBN 026224036X.
Land M. F. Eye movements of vertebrates and their relation to eye form and function // Journal of Comparative Physiology A. — 2014. — Vol. 201, № 2. — P. 195–214. — doi:10.1007/s00359-014-0964-5. — PMID25398576.
Martin G. R. Visual fields and their functions in birds // Journal of Ornithology. — 2007. — Vol. 148. — P. 547–562. — doi:10.1007/s10336-007-0213-6.
Brooke, M. de L.; Hanley, S.; Laughlin, S. B. (February 1999). Brooke, M. de L.; Hanley, S.; Laughlin, S. B. The scaling of eye size with body mass in birds // Proceedings of the Royal Society. — (February 1999). — Vol. 266, № (1417). — P. 405—412. — doi:10.1098/rspb.1999.0652. — PMID1689681.
Land M. F. Eye movements of vertebrates and their relation to eye form and function // Journal of Comparative Physiology A. — 2014. — Vol. 201, № 2. — P. 195–214. — doi:10.1007/s00359-014-0964-5. — PMID25398576.
Brooke, M. de L.; Hanley, S.; Laughlin, S. B. (February 1999). Brooke, M. de L.; Hanley, S.; Laughlin, S. B. The scaling of eye size with body mass in birds // Proceedings of the Royal Society. — (February 1999). — Vol. 266, № (1417). — P. 405—412. — doi:10.1098/rspb.1999.0652. — PMID1689681.