half page: something that covers (the top or bottom) half of a page
page: one side of one leaf (of a book or magazine or newspaper or letter etc.) or the written or pictorial matter it contains
passeriformes: largest order of birds comprising about half the known species; rooks; finches; sparrows; tits; warblers; robins; wrens; swallows; etc.; the four suborders are Eurylaimi and Tyranni and Menurae and Oscines or Passeres