Definitions
There is 1 meaning of the phrase
Order Passeriformes.
Order Passeriformes - as a noun
Largest order of birds comprising about half the known species; rooks; finches; sparrows; tits; warblers; robins; wrens; largest order of birds comprising about half the known species; rooks; finches; sparrows; tits; warblers; robins; wrens; swallows (passeriformes)
Synonyms (Exact Relations)
passeriformes