Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Ciconia boyciana, 45.3, 54.7, 372, 100, 238, 331, 48.1, Ciconia ciconia, 45.3, 54.7, 370, 102, 240, 329, 39.0, Ciconia nigra, 44.3, 55.7, 363, 98, 239, 340, 31.3,