The branch of zoology that deals with the study of birds.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "ornithology" in a sentence
"Felix's English is limited, but he has a degree in ornithology, and his knowledge of birds is extensive."
"Lord Walter Rothschild came from a family of rich bankers but his consuming interest was in ornithology and extinct birds in particular."
"Posted on Monday, September 3rd, 2007 at 9: 29 pm in ornithology, science by Bibi, the dodo."