bird tick

Century Dictionary and Cyclopedia

1. n. A name of some pupiparous dipterous insects which infest the plumage of birds, creeping quickly about among the feathers. A good example is Olfersia americana, which is found on many species of birds.

GNU Webster's 1913

1. n. (Zoöl.) a dipterous insect parasitic upon birds (genus Ornithomyia, and allies), usually winged.