Of, relating to, or characteristic of birds.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Zoology) of or relating to birds or a bird fauna
[C19: from Greek ornithikos, from ornis bird]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ɔrˈnɪθ ɪk)

of or pertaining to birds.
[1850–55; < Greek ornīthikós birdlike =ornīth-, s. of órnis bird + -ikos -ic]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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The regional environmental assessment and social impact assessment focused on environmental assessment in the areas involved in the project, evaluation of public infrastructure and vulnerable communities at the local level and represent analytical and participatory approach involving a strategic decision aimed at integrating environmental and social factors in the planning of the project.According to the assessment, the project will not have any significant environmental and social impacts on the subjects and objects in Kyrgyz Republic.According to the regional environmental assessment, there are five ornithic territories and one territory falling under the Ramsar Convention in the area under the project.
I am aware that the distinction between Latinate words and words of Greek origin is not always clear-cut, for instance ornithic, which is often thought to be from Greek, although AHD posits a New Latin form ornithosis from Greek ornis.
Fortunately, his vast knowledge of literature and history and his past experience in drawing animals and birds served him well as he placed his victims in some historical or literary context and often depicted them with ornithic, feline, or canine features.