Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Ciconia boyciana, 48.8, 51.2, 107, 38, 71, 81, 48.1, Ciconia ciconia, 48.1, 51.9, 105, 38, 73, 81, 39.0, Ciconia nigra, 49.2, 50.8, 105, 41, 73, 78, 31.3,