| Species (N=152) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Gallus gallus | 49.0 | 51.0 | 264 | 71 | 154 | 195 | 30.0 |
| Garrulus glandarius | 42.1 | 57.9 | 224 | 64 | 181 | 215 | 17.9 |
| Gavia stellata | 46.9 | 53.1 | 255 | 66 | 156 | 207 | 24.0 |
| Geococcyx californianus | 44.3 | 55.7 | 243 | 60 | 164 | 217 | 9.0 |
| Grus americana | 44.2 | 55.8 | 237 | 65 | 171 | 211 | 40.0 |
| Grus antigone | 43.6 | 56.4 | 236 | 62 | 173 | 213 | 41.8 |
| Grus canadensis | 44.2 | 55.8 | 237 | 65 | 173 | 209 | 36.6 |
| Grus grus | 43.4 | 56.6 | 233 | 64 | 176 | 211 | 43.0 |
| Grus japonensis | 43.4 | 56.6 | 235 | 62 | 175 | 212 | 25.2 |
| Grus leucogeranus | 43.7 | 56.3 | 236 | 63 | 173 | 212 | 36.2 |
| Grus monacha | 45.5 | 54.5 | 243 | 68 | 167 | 206 | 24.0 |
| Grus rubicunda | 43.7 | 56.3 | 237 | 62 | 172 | 213 | 33.0 |
| Grus vipio | 43.6 | 56.4 | 234 | 64 | 175 | 211 | 45.0 |
| Hemignathus munroi | 45.2 | 54.8 | 244 | 65 | 161 | 214 | 13.0 |
| Hemignathus parvus | 45.0 | 55.0 | 242 | 66 | 161 | 215 | 9.5 |
| Himatione sanguinea | 45.5 | 54.5 | 239 | 72 | 168 | 205 | 11.0 |
| Leiothrix lutea | 44.9 | 55.1 | 240 | 67 | 175 | 202 | 15.0 |
| Leptotila verreauxi | 45.2 | 54.8 | 234 | 75 | 186 | 188 | 8.6 |
| Loxia curvirostra | 44.9 | 55.1 | 241 | 66 | 166 | 211 | 16.1 |
| Loxops coccineus | 44.7 | 55.3 | 234 | 72 | 171 | 207 | 10.0 |
| Lyrurus tetrix | 44.7 | 55.3 | 233 | 73 | 190 | 188 | 12.2 |
| Melamprosops phaeosoma | 44.6 | 55.4 | 241 | 64 | 166 | 213 | 9.2 |
| Meleagris gallopavo | 43.9 | 56.1 | 230 | 70 | 193 | 191 | 13.0 |
| Melopsittacus undulatus | 44.7 | 55.3 | 247 | 59 | 168 | 210 | 21.0 |
| Netta rufina | 47.1 | 52.9 | 251 | 71 | 162 | 200 | 8.8 |
| Nipponia nippon | 47.5 | 52.5 | 251 | 74 | 157 | 202 | 25.8 |
| Nucifraga columbiana | 44.7 | 55.3 | 237 | 69 | 169 | 209 | 17.4 |
| Nycticorax nycticorax | 45.3 | 54.7 | 244 | 66 | 167 | 207 | 21.1 |
| Nymphicus hollandicus | 44.7 | 55.3 | 244 | 61 | 171 | 207 | 35.0 |
| Otis tarda | 46.9 | 53.1 | 250 | 71 | 169 | 194 | 28.3 |
| Pandion haliaetus | 44.7 | 55.3 | 233 | 73 | 166 | 212 | 32.0 |
| Parus major | 49.4 | 50.6 | 272 | 66 | 153 | 193 | 15.4 |
| Passer domesticus | 47.1 | 52.9 | 248 | 74 | 156 | 206 | 23.0 |
| Passer montanus | 47.1 | 52.9 | 241 | 81 | 162 | 200 | 13.1 |
| Pavo cristatus | 45.3 | 54.7 | 243 | 67 | 181 | 193 | 23.2 |
| Periparus ater | 51.3 | 48.7 | 271 | 80 | 144 | 189 | 9.5 |
| Phaethon rubricauda | 49.7 | 50.3 | 269 | 77 | 164 | 186 | 32.7 |
| Phalacrocorax carbo | 46.6 | 53.4 | 251 | 68 | 152 | 213 | 27.2 |
| Phasianus colchicus | 45.8 | 54.2 | 245 | 68 | 180 | 191 | 27.0 |
| Phoenicopterus roseus | 45.5 | 54.5 | 245 | 66 | 166 | 207 | 44.0 |