Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Columba livia, 44.9, 55.1, 240, 67, 181, 196, 35.0, Leptotila verreauxi, 45.2, 54.8, 234, 75, 186, 188, 8.6, Streptopelia chinensis, 45.6, 54.4, 242, 70, 175, 197, 9.8,