Tyranni

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The suborder of passerine birds Tyranni (the suboscines) includes about 1,000 species, the large majority of which are South American. These have a different anatomy of the syrinx musculature than the songbirds in the suborder Passeri, the oscine passerines. The available morphological, mt and nDNA sequence, and biogeographical data, as well as the (scant) fossil record, agrees that the Tyranni and Passeri suborders are evolutionarily distinct clades.