Ornithology

Definition:

• (n.) That branch of zoology which treats of the natural history of birds and their classification.
• (n.) A treatise or book on this science.

Compare ornithology with other words:

herpetology vs. ornithology

avian vs. ornithology

ornithological vs. ornithology

birdwatching vs. ornithology

bird vs. ornithology

ornithology vs. scientific

ornithology vs. study

branch vs. ornithology

ornithology vs. zoology

ornithologist vs. ornithology