strepitores

from The Century Dictionary.

• A group of insessorial birds, established by Blyth in 1849 for those Cuvierian Passerinæ which are non-passerine, and primarily divided into Syndactyli, Zygodactyli, and Heterodactyli. See these words.

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) A division of birds, including the clamatorial and picarian birds, which do not have well developed singing organs.