| Region | Species | Observers | Sites | Lists | Observations |
| World | 6710 | 813 | 25587 | 170359 | 3100505 |
| Afghanistan | 15 | 1 | 1 | 1 | 15 |
| Albania | 21 | 1 | 4 | 2 | 28 |
| Algeria | 11 | 1 | 0 | 1 | 11 |
| Andorra | 11 | 2 | 2 | 3 | 11 |
| Antarctica and Southern Ocean | 32 | 2 | 1 | 13 | 108 |
| Argentina: Buenos Aires | 126 | 8 | 7 | 16 | 387 |
| Argentina: Chubut | 23 | 2 | 1 | 3 | 24 |
| Argentina: Mendoza | 8 | 1 | 1 | 1 | 8 |
| Argentina: Misiones | 142 | 6 | 3 | 9 | 285 |
| Argentina: Rio Negro | 29 | 1 | 0 | 2 | 32 |
| Argentina: Salta | 1 | 1 | 1 | 1 | 1 |
| Argentina: Santa Cruz | 78 | 4 | 3 | 7 | 143 |
| Argentina: Tierra del Fuego | 88 | 6 | 3 | 19 | 289 |
| Australia: Ashmore and Cartier Islands | 96 | 2 | 2 | 21 | 237 |
| Australia: Australian Capital Territory | 264 | 93 | 317 | 6582 | 122429 |
| Australia: Christmas Island | 96 | 8 | 16 | 79 | 671 |
| Australia: Cocos Keeling Islands | 90 | 8 | 5 | 67 | 466 |
| Australia: Coral Sea Territory | 26 | 3 | 5 | 8 | 59 |
| Australia: Macquarie Island | 26 | 5 | 1 | 9 | 76 |
| Australia: New South Wales | 556 | 357 | 4028 | 30022 | 448397 |
| Australia: Norfolk Island | 79 | 17 | 27 | 95 | 1487 |
| Australia: Northern Territory | 397 | 134 | 1438 | 7658 | 160115 |
| Australia: Queensland | 641 | 356 | 4545 | 32405 | 795737 |
| Australia: South Australia | 416 | 161 | 1774 | 6148 | 99446 |
| Australia: Tasmania | 264 | 124 | 728 | 3596 | 50191 |
| Australia: Victoria | 488 | 375 | 4190 | 53637 | 1063237 |
| Australia: Western Australia | 505 | 126 | 2420 | 4996 | 68090 |
| Austria | 128 | 9 | 7 | 20 | 378 |
| Bahamas | 37 | 2 | 1 | 4 | 40 |
| Bahrain | 2 | 1 | 1 | 1 | 2 |
| Belgium | 66 | 4 | 7 | 11 | 199 |
| Belize | 195 | 2 | 10 | 12 | 299 |
| Bermuda | 57 | 1 | 0 | 4 | 119 |
| Bhutan | 312 | 1 | 0 | 1 | 312 |
| Bolivia | 373 | 6 | 47 | 73 | 932 |
| Botswana | 407 | 10 | 28 | 48 | 1750 |
| Brazil: Acre | 36 | 1 | 0 | 3 | 38 |
| Brazil: Amazonas | 132 | 2 | 6 | 9 | 218 |
| Brazil: Goiás | 2 | 1 | 1 | 1 | 2 |
| Brazil: Mato Grosso | 164 | 3 | 1 | 16 | 421 |
| Brazil: Mato Grosso do Sul | 105 | 2 | 2 | 3 | 150 |
| Brazil: Parana | 93 | 4 | 2 | 8 | 137 |
| Brazil: Rio de Janeiro | 40 | 2 | 0 | 5 | 54 |
| Brazil: São Paulo | 241 | 3 | 7 | 3 | 246 |
| Brunei | 43 | 3 | 1 | 3 | 57 |
| Bulgaria | 70 | 1 | 1 | 3 | 116 |
| Cambodia | 340 | 7 | 8 | 26 | 1048 |
| Canada: Alberta | 149 | 8 | 60 | 104 | 818 |
| Canada: British Columbia | 211 | 15 | 146 | 207 | 1780 |
| Canada: Manitoba | 11 | 1 | 6 | 6 | 14 |
| Canada: Newfoundland and Labrador | 50 | 2 | 2 | 3 | 71 |
| Canada: Nova Scotia | 73 | 3 | 0 | 3 | 94 |
| Canada: Ontario | 235 | 8 | 23 | 64 | 2159 |
| Canada: Quebec | 288 | 3 | 388 | 2146 | 24214 |
| Canada: Saskatchewan | 25 | 1 | 9 | 9 | 26 |
| Canada: Yukon | 32 | 1 | 7 | 7 | 47 |
| Chile: Antofagasta | 24 | 2 | 3 | 4 | 31 |
| Chile: Araucanía | 19 | 1 | 1 | 1 | 19 |
| Chile: Arica and Parinacota | 87 | 2 | 18 | 24 | 205 |
| Chile: Atacama | 4 | 1 | 1 | 1 | 4 |
| Chile: Coquimbo | 64 | 2 | 8 | 12 | 152 |
| Chile: Easter Island | 10 | 1 | 9 | 10 | 26 |
| Chile: Los Lagos | 97 | 3 | 17 | 35 | 428 |
| Chile: Magallanes | 91 | 4 | 19 | 46 | 392 |
| Chile: O'Higgins | 44 | 2 | 2 | 2 | 54 |
| Chile: Santiago | 87 | 7 | 18 | 36 | 357 |
| Chile: Valparaíso | 110 | 7 | 15 | 21 | 292 |
| China: Beijing | 59 | 6 | 11 | 17 | 138 |
| China: Guangdong | 11 | 1 | 0 | 1 | 11 |
| China: Guangxi | 38 | 2 | 8 | 9 | 83 |
| China: Guizhou | 64 | 1 | 0 | 1 | 64 |
| China: Hebei | 181 | 5 | 13 | 28 | 450 |
| China: Hong Kong | 275 | 19 | 40 | 112 | 2797 |
| China: Hubei | 9 | 2 | 2 | 2 | 9 |
| China: Shaanxi | 14 | 2 | 3 | 3 | 20 |
| China: Shanghai | 15 | 5 | 2 | 5 | 22 |
| China: Sichuan | 20 | 1 | 2 | 2 | 27 |
| China: Taiwan | 69 | 3 | 7 | 10 | 110 |
| China: Yunnan | 36 | 1 | 2 | 2 | 44 |
| Colombia | 187 | 4 | 11 | 16 | 313 |
| Congo DR (Zaire) | 380 | 1 | 18 | 148 | 1085 |
| Cook Islands | 20 | 3 | 10 | 5 | 57 |
| Costa Rica | 569 | 7 | 55 | 145 | 4002 |
| Côte d'Ivoire | 29 | 1 | 2 | 2 | 30 |
| Croatia | 89 | 3 | 3 | 9 | 237 |
| Cuba | 38 | 1 | 1 | 5 | 38 |
| Czech Republic | 141 | 5 | 15 | 25 | 299 |
| Denmark | 86 | 7 | 21 | 28 | 326 |
| Djibouti | 67 | 1 | 0 | 9 | 88 |
| East Timor | 83 | 6 | 6 | 15 | 174 |
| Ecuador | 680 | 7 | 14 | 76 | 1780 |
| Ecuador: Galapagos | 62 | 4 | 16 | 23 | 339 |
| Egypt | 36 | 5 | 5 | 10 | 56 |
| Eritrea | 18 | 1 | 0 | 3 | 22 |
| Estonia | 51 | 2 | 2 | 6 | 79 |
| Ethiopia | 405 | 3 | 18 | 160 | 1986 |
| Falkland Islands | 18 | 1 | 1 | 2 | 21 |
| Fiji | 80 | 19 | 21 | 115 | 1193 |
| Finland | 21 | 4 | 2 | 7 | 33 |
| France | 211 | 27 | 83 | 235 | 2321 |
| France: Réunion | 13 | 1 | 0 | 2 | 13 |
| French Polynesia | 28 | 2 | 15 | 26 | 119 |
| Gambia | 186 | 1 | 0 | 1 | 186 |
| Georgia | 4 | 1 | 1 | 2 | 4 |
| Germany | 223 | 17 | 71 | 505 | 5245 |
| Greece | 98 | 3 | 9 | 8 | 179 |
| Greenland | 12 | 1 | 5 | 7 | 23 |
| Guinea | 23 | 1 | 3 | 7 | 23 |
| Gulf of Mexico | 7 | 1 | 0 | 2 | 7 |
| Guyana | 2 | 1 | 1 | 1 | 2 |
| Hungary | 24 | 4 | 3 | 5 | 44 |
| Iceland | 73 | 7 | 30 | 97 | 1028 |
| India: Andhra Pradesh | 48 | 1 | 0 | 3 | 83 |
| India: Assam | 153 | 1 | 3 | 3 | 186 |
| India: Delhi | 22 | 3 | 0 | 3 | 25 |
| India: Gujarat | 228 | 2 | 7 | 9 | 479 |
| India: Haryana | 9 | 1 | 1 | 1 | 9 |
| India: Himachal Pradesh | 62 | 2 | 4 | 4 | 80 |
| India: Jammu & Kashmir | 38 | 2 | 4 | 4 | 40 |
| India: Karnataka | 107 | 4 | 6 | 10 | 190 |
| India: Kerala | 136 | 2 | 7 | 5 | 206 |
| India: Madhya Pradesh | 140 | 2 | 1 | 2 | 156 |
| India: Maharashtra | 3 | 1 | 2 | 1 | 3 |
| India: Rajasthan | 202 | 5 | 7 | 15 | 396 |
| India: Tamil Nadu | 102 | 2 | 2 | 3 | 122 |
| India: Uttar Pradesh | 39 | 3 | 3 | 5 | 54 |
| India: Uttarakhand | 365 | 3 | 10 | 11 | 717 |
| India: West Bengal | 9 | 1 | 2 | 1 | 9 |
| Indian Ocean | 48 | 1 | 0 | 5 | 59 |
| Indonesia: Java and Bali | 258 | 15 | 56 | 78 | 1297 |
| Indonesia: Kalimantan | 80 | 2 | 6 | 8 | 102 |
| Indonesia: Lesser Sundas | 198 | 3 | 1 | 5 | 278 |
| Indonesia: Maluku Islands | 95 | 3 | 12 | 15 | 164 |
| Indonesia: Sulawesi | 216 | 4 | 14 | 26 | 578 |
| Indonesia: Sumatra | 220 | 2 | 3 | 3 | 246 |
| Indonesia: West Papua | 202 | 2 | 18 | 43 | 454 |
| Iraq | 3 | 1 | 2 | 1 | 3 |
| Ireland | 115 | 7 | 9 | 17 | 239 |
| Israel | 190 | 5 | 28 | 47 | 629 |
| Italy | 182 | 13 | 28 | 58 | 1073 |
| Japan | 257 | 11 | 85 | 149 | 1802 |
| Japan: Nansei Shoto | 54 | 2 | 3 | 5 | 113 |
| Jordan | 14 | 1 | 0 | 1 | 14 |
| Kenya | 704 | 14 | 88 | 269 | 5377 |
| Latvia | 65 | 2 | 4 | 7 | 170 |
| Lebanon | 8 | 1 | 2 | 3 | 9 |
| Lesotho | 53 | 2 | 12 | 13 | 102 |
| Liechtenstein | 10 | 1 | 2 | 2 | 10 |
| Luxembourg | 17 | 3 | 4 | 5 | 34 |
| Macedonia | 24 | 1 | 2 | 1 | 24 |
| Madagascar | 106 | 2 | 8 | 20 | 224 |
| Malawi | 393 | 3 | 12 | 21 | 989 |
| Malaysia: Malaya | 450 | 22 | 65 | 223 | 4161 |
| Malaysia: Sabah | 397 | 11 | 43 | 117 | 3276 |
| Malaysia: Sarawak | 240 | 6 | 9 | 17 | 481 |
| Mauritius | 33 | 3 | 4 | 8 | 68 |
| Mexico: Baja California | 3 | 1 | 0 | 1 | 3 |
| Mexico: Baja California Sur | 20 | 1 | 1 | 1 | 20 |
| Mexico: Chiapas | 18 | 1 | 1 | 1 | 18 |
| Mexico: Coahuila | 58 | 1 | 2 | 3 | 87 |
| Mexico: Guerrero | 36 | 1 | 1 | 1 | 36 |
| Mexico: Mexico City & Distrito Federal | 54 | 1 | 0 | 1 | 54 |
| Mexico: Morelos | 13 | 1 | 1 | 1 | 13 |
| Mexico: Nuevo León | 7 | 1 | 1 | 1 | 7 |
| Mexico: Puebla | 6 | 1 | 1 | 1 | 6 |
| Mexico: Quintana Roo | 22 | 2 | 2 | 4 | 25 |
| Mexico: Veracruz | 6 | 1 | 1 | 1 | 6 |
| Mexico: Yucatán | 39 | 1 | 1 | 2 | 39 |
| Mongolia | 22 | 2 | 2 | 9 | 38 |
| Morocco | 124 | 1 | 14 | 33 | 379 |
| Mozambique | 69 | 2 | 1 | 3 | 78 |
| Myanmar | 331 | 2 | 2 | 3 | 393 |
| Namibia | 370 | 5 | 20 | 31 | 1176 |
| Nepal | 286 | 4 | 16 | 19 | 634 |
| Netherlands | 173 | 11 | 36 | 61 | 957 |
| New Caledonia | 90 | 9 | 14 | 47 | 489 |
| New Zealand | 198 | 55 | 304 | 754 | 8754 |
| New Zealand: Auckland and Campbell Is. | 36 | 3 | 3 | 8 | 107 |
| New Zealand: Chatham Islands | 26 | 1 | 0 | 1 | 26 |
| Norway | 134 | 6 | 15 | 62 | 682 |
| Norway: Svalbard | 23 | 1 | 1 | 11 | 79 |
| Oman | 118 | 1 | 14 | 24 | 470 |
| Pacific Ocean | 2 | 1 | 0 | 1 | 2 |
| Pakistan | 25 | 2 | 3 | 3 | 25 |
| Palestine | 6 | 1 | 1 | 3 | 6 |
| Panama | 346 | 4 | 20 | 57 | 1237 |
| Papua New Guinea: Bismarck Archipelago | 176 | 5 | 28 | 118 | 1036 |
| Papua New Guinea: Bougainville | 63 | 1 | 11 | 21 | 133 |
| Papua New Guinea: East New Guinea | 558 | 12 | 212 | 2335 | 29033 |
| Paraguay | 8 | 1 | 0 | 2 | 8 |
| Peru | 523 | 9 | 70 | 107 | 2247 |
| Philippines | 306 | 6 | 10 | 22 | 530 |
| Poland | 64 | 2 | 12 | 12 | 111 |
| Portugal | 169 | 5 | 27 | 28 | 899 |
| Qatar | 84 | 1 | 3 | 4 | 143 |
| Russia: Ivanovo | 5 | 1 | 1 | 1 | 5 |
| Russia: Krasnodar | 12 | 1 | 0 | 1 | 12 |
| Russia: Leningrad | 24 | 2 | 2 | 4 | 41 |
| Russia: Moscow | 27 | 2 | 4 | 10 | 67 |
| Russia: Rostov | 26 | 1 | 0 | 1 | 26 |
| Russia: Vladimir | 8 | 1 | 1 | 1 | 8 |
| Russia: Yaroslavl | 3 | 1 | 1 | 1 | 3 |
| Rwanda | 300 | 3 | 0 | 83 | 861 |
| Samoa | 14 | 1 | 0 | 1 | 14 |
| Seychelles | 49 | 3 | 2 | 14 | 128 |
| Singapore | 212 | 32 | 31 | 132 | 2092 |
| Slovenia | 34 | 2 | 3 | 6 | 58 |
| Solomon Islands | 40 | 3 | 4 | 6 | 69 |
| Somalia | 119 | 1 | 7 | 28 | 186 |
| South Africa | 682 | 24 | 612 | 927 | 20596 |
| South Georgia and the South Sandwich Islands | 22 | 1 | 2 | 3 | 27 |
| South Korea | 151 | 4 | 10 | 22 | 406 |
| South Orkneys | 5 | 1 | 0 | 1 | 5 |
| Spain | 258 | 15 | 120 | 205 | 2776 |
| Spain: Canary Islands | 59 | 1 | 4 | 8 | 112 |
| Sri Lanka | 263 | 4 | 7 | 15 | 772 |
| Swaziland | 69 | 3 | 8 | 9 | 108 |
| Sweden | 214 | 10 | 108 | 357 | 4490 |
| Switzerland | 172 | 19 | 51 | 118 | 1632 |
| Syria | 10 | 1 | 1 | 1 | 10 |
| Tanzania | 397 | 11 | 12 | 75 | 1690 |
| Tasman Sea | 14 | 2 | 0 | 6 | 18 |
| Thailand | 536 | 19 | 59 | 142 | 2864 |
| Tonga | 31 | 2 | 0 | 2 | 42 |
| Turkey | 210 | 5 | 31 | 41 | 742 |
| Uganda | 63 | 2 | 11 | 13 | 73 |
| Ukraine | 6 | 1 | 1 | 3 | 6 |
| United Arab Emirates | 121 | 5 | 12 | 30 | 421 |
| United Kingdom | 381 | 56 | 1481 | 10806 | 79427 |
| United States of America: Alabama | 43 | 2 | 2 | 6 | 64 |
| United States of America: Alaska | 133 | 6 | 49 | 74 | 744 |
| United States of America: Arizona | 212 | 7 | 6 | 29 | 498 |
| United States of America: Arkansas | 74 | 1 | 4 | 42 | 81 |
| United States of America: California | 361 | 25 | 177 | 723 | 9620 |
| United States of America: Colorado | 90 | 5 | 10 | 23 | 167 |
| United States of America: Delaware | 46 | 1 | 0 | 1 | 46 |
| United States of America: District of Columbia | 66 | 2 | 6 | 15 | 219 |
| United States of America: Florida | 270 | 15 | 48 | 260 | 5877 |
| United States of America: Georgia | 136 | 3 | 7 | 11 | 387 |
| United States of America: Hawaii | 75 | 11 | 23 | 33 | 305 |
| United States of America: Idaho | 33 | 2 | 0 | 2 | 35 |
| United States of America: Illinois | 20 | 1 | 0 | 2 | 28 |
| United States of America: Indiana | 7 | 1 | 1 | 1 | 7 |
| United States of America: Kentucky | 32 | 2 | 1 | 2 | 36 |
| United States of America: Louisiana | 100 | 3 | 7 | 13 | 225 |
| United States of America: Maine | 88 | 2 | 1 | 3 | 110 |
| United States of America: Maryland | 128 | 5 | 7 | 22 | 319 |
| United States of America: Massachusetts | 102 | 7 | 5 | 11 | 186 |
| United States of America: Michigan | 64 | 1 | 3 | 8 | 90 |
| United States of America: Minnesota | 83 | 3 | 4 | 5 | 136 |
| United States of America: Mississippi | 108 | 4 | 5 | 10 | 223 |
| United States of America: Montana | 7 | 1 | 0 | 1 | 7 |
| United States of America: Nevada | 65 | 5 | 3 | 5 | 74 |
| United States of America: New Hampshire | 5 | 2 | 2 | 4 | 5 |
| United States of America: New Jersey | 249 | 6 | 6 | 11 | 479 |
| United States of America: New Mexico | 86 | 4 | 5 | 11 | 142 |
| United States of America: New York | 182 | 17 | 20 | 72 | 1214 |
| United States of America: North Carolina | 69 | 2 | 3 | 4 | 76 |
| United States of America: Oklahoma | 12 | 1 | 0 | 2 | 13 |
| United States of America: Oregon | 81 | 3 | 13 | 8 | 98 |
| United States of America: Pennsylvania | 24 | 2 | 2 | 2 | 24 |
| United States of America: South Carolina | 140 | 5 | 6 | 10 | 316 |
| United States of America: Tennessee | 56 | 4 | 5 | 11 | 131 |
| United States of America: Texas | 307 | 7 | 54 | 91 | 1720 |
| United States of America: Utah | 11 | 2 | 1 | 4 | 11 |
| United States of America: Virginia | 78 | 3 | 2 | 8 | 120 |
| United States of America: Washington | 140 | 4 | 13 | 25 | 279 |
| United States of America: West Virginia | 25 | 2 | 2 | 5 | 30 |
| United States of America: Wisconsin | 48 | 1 | 3 | 31 | 53 |
| United States of America: Wyoming | 32 | 2 | 1 | 4 | 38 |
| Uzbekistan | 1 | 1 | 2 | 1 | 1 |
| Vanuatu | 33 | 4 | 1 | 9 | 70 |
| Venezuela | 86 | 2 | 6 | 8 | 102 |
| Vietnam | 458 | 11 | 23 | 40 | 1252 |
| Virgin Islands (UK) | 13 | 1 | 4 | 4 | 14 |
| Virgin Islands (US) | 36 | 1 | 10 | 15 | 65 |
| Zambia | 530 | 5 | 7 | 16 | 898 |
| Zimbabwe | 454 | 9 | 24 | 65 | 3006 |