Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Aix galericulata, 45.4, 54.6, 412, 315, 321, 554, 10.4, Anas acuta, 45.5, 54.5, 407, 323, 327, 546, 27.4, Anas crecca, 45.3, 54.7, 410, 315, 323, 553, 27.1, Anas platyrhynchos, 45.4, 54.6, 403, 324, 328, 547, 29.1, Anser albifrons, 45.4, 54.6, 407, 324, 334, 544, 47.0, Anser anser, 45.7, 54.3, 413, 322, 332, 543, 31.0, Anser fabalis, 43.8, 56.2, 314, 243, 268, 446, 25.6, Aythya americana, 45.5, 54.5, 415, 315, 317, 557, 22.6, Aythya ferina, 45.6, 54.4, 419, 313, 313, 559, 23.2, Aythya fuligula, 45.5, 54.5, 413, 317, 319, 554, 45.2, Branta bernicla, 45.9, 54.1, 413, 323, 322, 547, 28.8, Branta canadensis, 45.7, 54.3, 408, 326, 329, 543, 42.0, Cygnus columbianus, 46.3, 53.7, 416, 328, 325, 538, 24.1, Cygnus cygnus, 46.1, 53.9, 415, 326, 328, 539, 26.5, Cygnus olor, 46.0, 54.0, 413, 326, 326, 541, 70.0, Netta rufina, 45.8, 54.2, 417, 319, 318, 554, 8.8, Tadorna tadorna, 45.4, 54.6, 403, 324, 328, 547, 24.8,