Anthus Spraguei

Skylark \Sky"lark`\, n. (Zool.)
   A lark that mounts and sings as it files, especially the
   common species ({Alauda arvensis}) found in Europe and in
   some parts of Asia, and celebrated for its melodious song; --
   called also {sky laverock}. See under {Lark}.
   [1913 Webster]

   Note: The Australian skylark ({Cincloramphus cantillans}) is
         a pipit which has the habit of ascending
         perpendicularly like a skylark, but it lacks the song
         of a true lark. The Missouri skylark is a pipit
         ({Anthus Spraguei}) of the Western United States,
         resembling the skylark in habit and song.
         [1913 Webster]
    

Pipit \Pip"it\, n. [So named from its call note.] (Zool.)
   Any one of numerous species of small singing birds belonging
   to {Anthus} and allied genera, of the family
   {Motacillid[ae]}. They strongly resemble the true larks in
   habits, colors, and the great length of the hind claw. They
   are, therefore, often called {titlarks}, and {pipit larks}.
   [1913 Webster]

   Note: The {meadow pipit} ({Anthus pratensis}); the {tree
         pipit}, or tree lark ({Anthus trivialis}); and the
         {rock pipit}, or sea lark ({Anthus obscurus}) are
         well-known European species. The common American pipit,
         or brown lark, is {Anthus Pensilvanicus}. The Western
         species ({Anthus Spraguei}) is called the {American
         skylark}, on account of its musical powers.
         [1913 Webster]