| Species (N=152) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) | 
|---|---|---|---|---|---|---|---|
| Pica pica | 45.6 | 54.4 | 452 | 256 | 402 | 441 | 21.7 | 
| Pinicola enucleator | 46.2 | 53.8 | 462 | 254 | 395 | 440 | 9.8 | 
| Platalea leucorodia | 45.3 | 54.7 | 453 | 249 | 402 | 447 | 30.1 | 
| Platalea minor | 45.9 | 54.1 | 459 | 253 | 397 | 442 | 15.0 | 
| Poecile palustris | 50.5 | 49.5 | 517 | 271 | 365 | 407 | 11.9 | 
| Polyplectron napoleonis | 47.5 | 52.5 | 471 | 265 | 405 | 410 | 15.0 | 
| Pyrrhocorax graculus | 44.7 | 55.3 | 437 | 257 | 403 | 454 | 24.4 | 
| Pyrrhocorax pyrrhocorax | 45.4 | 54.6 | 441 | 263 | 401 | 446 | 20.3 | 
| Pyrrhula pyrrhula | 46.9 | 53.1 | 474 | 254 | 379 | 444 | 17.5 | 
| Quiscalus quiscula | 48.0 | 52.0 | 489 | 256 | 367 | 439 | 23.1 | 
| Recurvirostra avosetta | 46.9 | 53.1 | 484 | 244 | 387 | 436 | 27.8 | 
| Regulus calendula | 46.0 | 54.0 | 461 | 253 | 401 | 436 | 5.6 | 
| Scolopax rusticola | 45.2 | 54.8 | 452 | 249 | 418 | 432 | 15.5 | 
| Sitta carolinensis | 46.7 | 53.3 | 465 | 259 | 382 | 445 | 9.8 | 
| Spheniscus demersus | 48.5 | 51.5 | 506 | 246 | 368 | 431 | 27.3 | 
| Stercorarius maccormicki | 46.6 | 53.4 | 473 | 250 | 396 | 432 | 23.5 | 
| Streptopelia chinensis | 48.2 | 51.8 | 500 | 247 | 398 | 406 | 9.8 | 
| Struthio camelus | 45.5 | 54.5 | 448 | 258 | 422 | 423 | 50.0 | 
| Sylvia atricapilla | 46.1 | 53.9 | 462 | 253 | 393 | 443 | 13.8 | 
| Syrmaticus reevesii | 46.1 | 53.9 | 464 | 251 | 416 | 420 | 9.2 | 
| Tachybaptus ruficollis | 48.2 | 51.8 | 503 | 244 | 360 | 444 | 17.5 | 
| Tachycineta bicolor | 48.5 | 51.5 | 497 | 255 | 366 | 433 | 12.1 | 
| Tachycineta thalassina | 48.4 | 51.6 | 491 | 259 | 373 | 428 | 9.1 | 
| Tadorna tadorna | 50.5 | 49.5 | 507 | 276 | 373 | 395 | 24.8 | 
| Taeniopygia guttata | 46.9 | 53.1 | 470 | 258 | 365 | 458 | 12.0 | 
| Tetrastes bonasia | 46.7 | 53.3 | 463 | 262 | 418 | 408 | 7.2 | 
| Thraupis episcopus | 48.5 | 51.5 | 485 | 267 | 388 | 411 | 9.5 | 
| Threskiornis aethiopicus | 45.5 | 54.5 | 458 | 247 | 399 | 447 | 37.0 | 
| Turdus migratorius | 50.4 | 49.6 | 502 | 279 | 371 | 399 | 17.0 | 
| Vanellus vanellus | 46.6 | 53.4 | 472 | 251 | 398 | 430 | 24.5 | 
| Vestiaria coccinea | 47.5 | 52.4 | 478 | 259 | 385 | 428 | 8.8 | 
| Vireo olivaceus | 46.0 | 54.0 | 455 | 259 | 367 | 470 | 10.2 |