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ornithology

American  
[awr-nuh-thol-uh-jee] / ˌɔr nəˈθɒl ə dʒi /

noun

  1. the branch of zoology that deals with birds.


ornithology British  
/ ˌɔːnɪθəˈlɒdʒɪkəl, ˌɔːnɪˈθɒlədʒɪ /

noun

  1. the study of birds, including their physiology, classification, ecology, and behaviour

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ornithology Scientific  
/ ôr′nə-thŏlə-jē /
  1. The scientific study of birds.


Other Word Forms

  • ornithologic adjective
  • ornithological adjective
  • ornithologically adverb
  • ornithologist noun
  • unornithological adjective

Etymology

Origin of ornithology

From the New Latin word ornithologia, dating back to 1645–55. See ornitho-, -logy

Explanation

Ornithology is the scientific study of birds. Zoology is the broad field that studies animals, but there are as many subfields as there are critters. One is ornithology: the study of birds. This includes tiny birds like finches and huge birds like vultures. Ornithologists study bird songs, feathers, migration patterns, and everything else about birds. People who are experts in ornithology — ornithologists — go to graduate school, but you don't have to study birds in school to be interested. Birdwatchers know a lot of ornithology too.

Keep Reading on Vocabulary.com

Vocabulary lists containing ornithology

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It says it has conducted one of the largest known ornithology surveys in the world as part of the application process and that it disagrees strongly with the points put forward in the letter.

From BBC • Apr. 29, 2025

The ornithology curator at the Natural History Museum of Los Angeles County placed handfuls of feathers between two small screens and clipped them together with zip ties.

From Los Angeles Times • Mar. 7, 2025

"Most hummingbirds drink while they're hovering mid-flight," said Rico-Guevara, who is also curator of ornithology at the UW's Burke Museum of Natural History and Culture.

From Science Daily • Dec. 5, 2024

That’s because the company’s giant color compendiums originate at least in part from ornithology and natural history.

From National Geographic • Dec. 7, 2023

I imagine it’s someone I haven’t met yet, someone I somehow missed while I was hiding out in the ornithology stacks and they were tearing through poetry and memorizing lines.

From "Sparrow" by Sarah Moon