| Species (N=152) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Accipiter gentilis | 44.4 | 55.6 | 319 | 114 | 264 | 278 | 22.0 |
| Accipiter nisus | 44.0 | 56.0 | 319 | 110 | 252 | 294 | 20.2 |
| Acridotheres cristatellus | 51.1 | 48.9 | 349 | 151 | 228 | 250 | 13.0 |
| Acrocephalus scirpaceus | 49.9 | 50.1 | 324 | 164 | 239 | 251 | 14.0 |
| Aegypius monachus | 47.3 | 52.7 | 328 | 135 | 256 | 259 | 39.0 |
| Agelaius phoeniceus | 46.6 | 53.4 | 319 | 137 | 264 | 258 | 20.0 |
| Aix galericulata | 49.2 | 50.8 | 334 | 147 | 239 | 258 | 10.4 |
| Alauda arvensis | 50.3 | 49.7 | 346 | 146 | 236 | 250 | 10.1 |
| Alectura lathami | 48.1 | 51.9 | 318 | 152 | 261 | 247 | 12.5 |
| Anas acuta | 50.6 | 49.4 | 335 | 160 | 235 | 248 | 27.4 |
| Anas crecca | 50.4 | 49.6 | 336 | 157 | 235 | 250 | 27.1 |
| Anas platyrhynchos | 50.3 | 49.7 | 338 | 154 | 237 | 249 | 29.1 |
| Anser albifrons | 47.0 | 53.0 | 315 | 145 | 247 | 271 | 47.0 |
| Anser anser | 47.2 | 52.8 | 315 | 147 | 249 | 267 | 31.0 |
| Anser fabalis | 47.6 | 52.4 | 308 | 150 | 245 | 260 | 25.6 |
| Anthropoides virgo | 46.1 | 53.9 | 320 | 125 | 251 | 270 | 27.0 |
| Apus apus | 45.0 | 55.0 | 319 | 121 | 261 | 277 | 21.1 |
| Aquila chrysaetos | 48.3 | 51.7 | 338 | 132 | 248 | 255 | 48.0 |
| Ara glaucogularis | 47.2 | 52.8 | 337 | 126 | 257 | 261 | 22.0 |
| Aratinga acuticaudata | 47.8 | 52.2 | 340 | 129 | 250 | 262 | 31.0 |
| Archilochus colubris | 46.7 | 53.3 | 322 | 135 | 267 | 254 | 9.1 |
| Ardea cinerea | 47.3 | 52.7 | 326 | 137 | 262 | 253 | 37.5 |
| Ardea purpurea | 47.2 | 52.8 | 327 | 135 | 262 | 254 | 25.4 |
| Arenaria interpres | 44.7 | 55.3 | 307 | 130 | 273 | 268 | 22.3 |
| Aythya americana | 50.0 | 50.0 | 335 | 154 | 242 | 247 | 22.6 |
| Aythya ferina | 49.9 | 50.1 | 334 | 154 | 241 | 249 | 23.2 |
| Aythya fuligula | 50.3 | 49.7 | 339 | 153 | 238 | 248 | 45.2 |
| Balearica regulorum | 46.2 | 53.8 | 316 | 130 | 257 | 263 | 27.2 |
| Botaurus stellaris | 45.8 | 54.2 | 330 | 118 | 261 | 269 | 11.3 |
| Branta bernicla | 46.8 | 53.2 | 304 | 154 | 257 | 263 | 28.8 |
| Branta canadensis | 47.9 | 52.1 | 315 | 153 | 249 | 261 | 42.0 |
| Bubulcus ibis | 46.3 | 53.7 | 324 | 129 | 265 | 260 | 23.0 |
| Bucorvus leadbeateri | 49.7 | 50.3 | 344 | 142 | 237 | 255 | 70.0 |
| Buteo buteo | 47.5 | 52.5 | 339 | 126 | 247 | 266 | 28.8 |
| Cacatua moluccensis | 47.8 | 52.2 | 338 | 131 | 248 | 264 | 65.8 |
| Calyptorhynchus baudinii | 45.9 | 54.1 | 333 | 117 | 246 | 285 | 47.0 |
| Cardinalis cardinalis | 45.9 | 54.1 | 294 | 155 | 275 | 254 | 28.5 |
| Carduelis pinus | 44.6 | 55.4 | 311 | 125 | 259 | 283 | 11.0 |
| Carduelis psaltria | 43.9 | 56.1 | 302 | 127 | 269 | 280 | 5.7 |
| Carduelis spinus | 44.3 | 55.7 | 309 | 124 | 260 | 285 | 13.5 |