The Aves-class was designed from a fusion of Romulan technology with research performed by the Dyson Joint Command that also produced the Solanae and Nov-class vessels for Starfleet and the Klingon Defense Force, respectively. (STO website: Dev Blogs)
The Aves-class was chiefly a science vessel but also had features of destroyers. It possessed a standard Romulan cloaking device and variable geometry. Switching to tactical mode reduced its scientific abilities but enabled it to use a pair of heavy proton cannons for improved damage output.
|Starship classes of the Romulan Republic|
|subclass groups||Ar'Kif (Ar'Kala • Jhu'ael) • Aves (Caprimul • Harpia • Tyton) • Baratan (Deihu • Vastam) • D'deridex (D'ridthau • D'Khellra) • Daeinos (Dinaes) • Dhelan (Dhael) • Scimitar (Falchion • Tulwar) • Ha'apax (Haakona) • Khaiell (Jaeih • Ohkala) • Mogai (Valdore • Morrigu)|
|other named classes||Aelahl • Faeht • Ha'feh • Ha'nom • T'liss • T'varo|
|small craft||Jarok • Kestrel • Scorpion • Talon • Tiercel|