Although some birds use their beaks to defend their territories, gather nesting materials or to weave a nest, the main purpose of the beak is to obtain food in the easiest and most effective way possible.
(some birds; use; their beaks; to defend their territories, gather nesting materials or to weave a nest) Context(some birds use,List([9, 23))):(some birds; use their beaks to defend; their territories) Context(some birds use,List([9, 23))):(some birds; use their beaks to gather; nesting materials) Context(some birds use,List([9, 23))):(some birds; use their beaks to to weave; a nest) (the main purpose of the beak; is; to obtain food in the easiest and most effective way possible)
some birds use,List([9, 23)) some birds use,List([9, 23)) some birds use,List([9, 23))
some birds some birds some birds some birds the main purpose of the beak
use use their beaks to defend use their beaks to gather use their beaks to to weave is
their beaks to defend their territories, gather nesting materials or to weave a nest
their territories
nesting materials
a nest
to obtain food in the easiest and most effective way possible