"one who makes a special study of birds," 1670s, from ornithology + -ist.
ornamentation
ornate
ornery
ornitho-
ornithological
ornithologist
ornithology
ornithomancy
ornithopod
ornithopter
oro-
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}