| Species (N=152) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Gallus gallus | 41.2 | 58.8 | 60 | 8 | 40 | 57 | 30.0 |
| Garrulus glandarius | 39.9 | 60.1 | 57 | 10 | 44 | 57 | 17.9 |
| Gavia stellata | 48.2 | 51.8 | 68 | 13 | 37 | 50 | 24.0 |
| Geococcyx californianus | 39.4 | 60.6 | 57 | 8 | 39 | 61 | 9.0 |
| Grus americana | 43.7 | 56.3 | 66 | 10 | 42 | 56 | 40.0 |
| Grus antigone | 42.5 | 57.5 | 66 | 8 | 42 | 58 | 41.8 |
| Grus canadensis | 43.1 | 56.9 | 66 | 9 | 42 | 57 | 36.6 |
| Grus grus | 42.5 | 57.5 | 65 | 9 | 43 | 57 | 43.0 |
| Grus japonensis | 45.4 | 54.6 | 67 | 12 | 40 | 55 | 25.2 |
| Grus leucogeranus | 43.7 | 56.3 | 68 | 8 | 39 | 59 | 36.2 |
| Grus monacha | 43.1 | 56.9 | 66 | 9 | 42 | 57 | 24.0 |
| Grus rubicunda | 43.7 | 56.3 | 68 | 8 | 41 | 57 | 33.0 |
| Grus vipio | 39.7 | 60.3 | 61 | 8 | 47 | 58 | 45.0 |
| Hemignathus munroi | 44.6 | 55.4 | 63 | 12 | 44 | 49 | 13.0 |
| Hemignathus parvus | 42.9 | 57.1 | 59 | 13 | 47 | 49 | 9.5 |
| Himatione sanguinea | 45.8 | 54.2 | 62 | 15 | 44 | 47 | 11.0 |
| Leiothrix lutea | 43.5 | 56.5 | 61 | 12 | 40 | 55 | 15.0 |
| Leptotila verreauxi | 39.5 | 60.5 | 57 | 9 | 43 | 58 | 8.6 |
| Loxia curvirostra | 42.9 | 57.1 | 59 | 13 | 45 | 51 | 16.1 |
| Loxops coccineus | 45.2 | 54.8 | 64 | 12 | 43 | 49 | 10.0 |
| Lyrurus tetrix | 40.6 | 59.4 | 59 | 8 | 40 | 58 | 12.2 |
| Melamprosops phaeosoma | 40.5 | 59.5 | 57 | 11 | 50 | 50 | 9.2 |
| Meleagris gallopavo | 38.8 | 61.2 | 58 | 6 | 41 | 60 | 13.0 |
| Melopsittacus undulatus | 41.7 | 58.3 | 63 | 7 | 35 | 63 | 21.0 |
| Netta rufina | 50.6 | 49.4 | 69 | 16 | 29 | 54 | 8.8 |
| Nipponia nippon | 46.4 | 53.6 | 69 | 9 | 35 | 55 | 25.8 |
| Nucifraga columbiana | 38.7 | 61.3 | 56 | 9 | 46 | 57 | 17.4 |
| Nycticorax nycticorax | 44.0 | 56.0 | 64 | 10 | 35 | 59 | 21.1 |
| Nymphicus hollandicus | 40.7 | 59.3 | 62 | 6 | 37 | 62 | 35.0 |
| Otis tarda | 44.0 | 56.0 | 67 | 7 | 38 | 56 | 28.3 |
| Pandion haliaetus | 42.3 | 57.7 | 61 | 10 | 34 | 63 | 32.0 |
| Parus major | 45.8 | 54.2 | 66 | 11 | 36 | 55 | 15.4 |
| Passer domesticus | 47.0 | 53.0 | 67 | 12 | 41 | 48 | 23.0 |
| Passer montanus | 45.8 | 54.2 | 67 | 10 | 41 | 50 | 13.1 |
| Pavo cristatus | 38.8 | 61.2 | 57 | 7 | 41 | 60 | 23.2 |
| Periparus ater | 45.2 | 54.8 | 67 | 9 | 41 | 51 | 9.5 |
| Phaethon rubricauda | 43.5 | 56.5 | 61 | 12 | 39 | 56 | 32.7 |
| Phalacrocorax carbo | 40.5 | 59.5 | 61 | 7 | 36 | 64 | 27.2 |
| Phasianus colchicus | 40.6 | 59.4 | 57 | 10 | 42 | 56 | 27.0 |
| Phoenicopterus roseus | 42.3 | 57.7 | 64 | 7 | 37 | 60 | 44.0 |