Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Columba livia, 44.4, 55.6, 356, 106, 249, 329, 35.0, Leptotila verreauxi, 44.0, 56.0, 356, 101, 253, 329, 8.6, Streptopelia chinensis, 43.5, 56.5, 352, 100, 250, 337, 9.8,