| Species (N=152) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Gallus gallus | 47.1 | 52.9 | 282 | 178 | 200 | 316 | 30.0 |
| Garrulus glandarius | 48.1 | 51.9 | 261 | 209 | 209 | 299 | 17.9 |
| Gavia stellata | 48.1 | 51.9 | 271 | 200 | 199 | 309 | 24.0 |
| Geococcyx californianus | 47.6 | 52.4 | 284 | 184 | 201 | 315 | 9.0 |
| Grus americana | 49.0 | 51.0 | 282 | 194 | 187 | 309 | 40.0 |
| Grus antigone | 47.6 | 52.4 | 271 | 192 | 197 | 312 | 41.8 |
| Grus canadensis | 48.7 | 51.3 | 285 | 187 | 194 | 304 | 36.6 |
| Grus grus | 48.6 | 51.4 | 276 | 195 | 192 | 307 | 43.0 |
| Grus japonensis | 48.0 | 52.0 | 276 | 190 | 193 | 312 | 25.2 |
| Grus leucogeranus | 48.2 | 51.8 | 270 | 195 | 195 | 305 | 36.2 |
| Grus monacha | 48.6 | 51.4 | 278 | 194 | 192 | 307 | 24.0 |
| Grus rubicunda | 48.2 | 51.8 | 274 | 194 | 195 | 307 | 33.0 |
| Grus vipio | 48.0 | 52.0 | 278 | 189 | 192 | 313 | 45.0 |
| Hemignathus munroi | 39.4 | 57.7 | 15 | 13 | 23 | 18 | 13.0 |
| Hemignathus parvus | 48.5 | 51.5 | 266 | 207 | 202 | 301 | 9.5 |
| Himatione sanguinea | 48.0 | 52.0 | 259 | 208 | 208 | 297 | 11.0 |
| Leiothrix lutea | 48.6 | 51.4 | 266 | 213 | 202 | 304 | 15.0 |
| Leptotila verreauxi | 48.4 | 51.6 | 268 | 201 | 204 | 296 | 8.6 |
| Loxia curvirostra | 48.6 | 51.4 | 266 | 207 | 206 | 295 | 16.1 |
| Loxops coccineus | 46.0 | 54.0 | 83 | 76 | 82 | 105 | 10.0 |
| Lyrurus tetrix | 45.6 | 54.4 | 262 | 181 | 206 | 322 | 12.2 |
| Melamprosops phaeosoma | 48.3 | 51.7 | 266 | 206 | 206 | 300 | 9.2 |
| Meleagris gallopavo | 44.9 | 55.1 | 254 | 183 | 209 | 327 | 13.0 |
| Melopsittacus undulatus | 48.5 | 51.5 | 297 | 177 | 175 | 328 | 21.0 |
| Netta rufina | 48.8 | 51.2 | 282 | 198 | 183 | 320 | 8.8 |
| Nipponia nippon | 47.8 | 52.2 | 264 | 203 | 204 | 306 | 25.8 |
| Nucifraga columbiana | 48.0 | 52.0 | 257 | 211 | 206 | 302 | 17.4 |
| Nycticorax nycticorax | 47.9 | 52.1 | 266 | 200 | 196 | 311 | 21.1 |
| Nymphicus hollandicus | 49.7 | 50.3 | 301 | 182 | 173 | 316 | 35.0 |
| Otis tarda | 47.6 | 52.4 | 268 | 193 | 198 | 310 | 28.3 |
| Pandion haliaetus | 48.1 | 51.9 | 274 | 193 | 190 | 314 | 32.0 |
| Parus major | 49.8 | 50.2 | 280 | 208 | 197 | 295 | 15.4 |
| Passer domesticus | 48.9 | 51.1 | 271 | 207 | 200 | 300 | 23.0 |
| Passer montanus | 48.7 | 51.3 | 272 | 206 | 200 | 303 | 13.1 |
| Pavo cristatus | 47.3 | 52.7 | 285 | 178 | 196 | 320 | 23.2 |
| Periparus ater | 49.7 | 50.3 | 280 | 207 | 197 | 295 | 9.5 |
| Phaethon rubricauda | 49.4 | 50.6 | 300 | 185 | 185 | 311 | 32.7 |
| Phalacrocorax carbo | 52.0 | 48.0 | 311 | 200 | 173 | 299 | 27.2 |
| Phasianus colchicus | 47.4 | 52.6 | 275 | 183 | 190 | 318 | 27.0 |
| Phoenicopterus roseus | 47.9 | 52.1 | 271 | 194 | 193 | 312 | 44.0 |