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Accounting for 330 known species, the parrot is widespread in tropical regions of several continents, most of them

Representing 330 known species, the parrot Is widespread in tropical regions of several continents;
most of them are

With 330 known species, the parrot, widespread In tropical regions of several continents, is In most cases

There are 330 known species of parrots, widespread in tropical regions of several continents, and In most cases are

Parrots, of which there are 330 known species, are widespread in tropical regions of several continents; most are