a large African long-legged diurnal bird of prey, Sagittarius serpentarius, having a crest and tail of long feathers and feeding chiefly on snakes: family Sagittariidae, order Falconiformes (hawks, falcons, etc)
Word origin
C18: so called because its crest resembles a group of quill pens stuck behind theear
secretary bird in American English
a large, black and grayish-blue African bird of prey (Sagittarius serpentarius), the only species in its family (Sagittariidae), with a long neck, long legs, and tufts of penlike feathers sticking out from the back of its head: it feeds on insects, snakes, etc.