The Collaborative International Dictionary of English v.0.48:

Screamer \Scream"er\ (skr[=e]m"[~e]r), n. (Zool.)
   Any one of three species of South American birds constituting
   the family Anhimidae, and the suborder Palamedeae. They
   have two spines on each wing, and the head is either crested
   or horned. They are easily tamed, and then serve as guardians
   for other poultry. The crested screamers, or chajas, belong
   to the genus Chauna. The horned screamer, or kamichi, is
   Palamedea cornuta.
   [1913 Webster]

   2. Something so remarkable as to provoke a scream, as of joy.
      [Slang]
      [Webster 1913 Suppl.]

   3. An exclamation mark. [Printer's Slang]
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Kamichi \Ka"mi*chi\, n. (Zool.)
   A curious South American bird (Anhima  or {Palamedea
   cornuta), often domesticated by the natives and kept with
   poultry, which it defends against birds of prey. It has a
   long, slender, hornlike ornament on its head, and two sharp
   spurs on each wing. Although its beak, feet, and legs
   resemble those of gallinaceous birds, it is related in
   anatomical characters to the ducks and geese (Anseres).
   Called also horned screamer. The name is sometimes applied
   also to the chaja. See Chaja, and Screamer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Anhima \An"hi*ma\, n. [Brazilian name.]
   A South American aquatic bird; the horned screamer or kamichi
   (Palamedea cornuta). See Kamichi.
   [1913 Webster]