Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Anthropoides virgo, 45.3, 54.7, 479, 141, 315, 433, 27.0, Balearica regulorum, 44.2, 55.8, 466, 138, 327, 437, 27.2, Fulica atra, 44.4, 55.6, 472, 136, 297, 463, 20.6, Gallinula chloropus, 44.9, 55.1, 477, 137, 297, 457, 18.6, Grus americana, 44.1, 55.9, 467, 136, 328, 437, 40.0, Grus antigone, 43.8, 56.2, 468, 131, 327, 442, 41.8, Grus canadensis, 44.6, 55.4, 471, 139, 324, 434, 36.6, Grus grus, 44.1, 55.9, 467, 136, 327, 438, 43.0, Grus japonensis, 44.2, 55.8, 475, 130, 319, 444, 25.2, Grus leucogeranus, 44.3, 55.7, 467, 139, 322, 440, 36.2, Grus monacha, 44.9, 55.1, 480, 134, 315, 439, 24.0, Grus rubicunda, 44.6, 55.4, 477, 133, 320, 438, 33.0, Grus vipio, 44.4, 55.6, 475, 133, 319, 441, 45.0,