Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Ciconia boyciana, 41.7, 58.3, 60, 10, 40, 58, 48.1, Ciconia ciconia, 41.7, 58.3, 59, 11, 41, 57, 39.0, Ciconia nigra, 45.8, 54.2, 68, 9, 36, 55, 31.3,