Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Ciconia boyciana, 48.4, 51.6, 131, 39, 81, 100, 48.1, Ciconia ciconia, 48.1, 51.9, 129, 40, 85, 97, 39.0, Ciconia nigra, 47.7, 52.3, 128, 40, 84, 100, 31.3,