The birds use their beaks to tear into the animals they catch--their prey.
(they; catch; their prey) (The birds; use; their beaks; to tear into the animals) Context(The birds use,List([0, 13))):(The birds; use their beaks to tear; into the animals)
The birds use,List([0, 13))
they The birds The birds
catch use use their beaks to tear
their prey
their beaks to tear into the animals
into the animals