| Region | Species | Observers | Sites | Lists | Observations |
| World | 5406 | 275 | 14244 | 56665 | 982590 |
| Albania | 34 | 1 | 3 | 3 | 45 |
| Andorra | 7 | 1 | 1 | 1 | 7 |
| Antarctica | 31 | 2 | 13 | 13 | 108 |
| Argentina: Buenos Aires | 109 | 4 | 5 | 10 | 249 |
| Argentina: Chubut | 13 | 2 | 2 | 2 | 13 |
| Argentina: Misiones | 27 | 1 | 1 | 1 | 27 |
| Argentina: Rio Negro | 23 | 1 | 1 | 1 | 23 |
| Argentina: Salta | 1 | 1 | 1 | 1 | 1 |
| Argentina: Santa Cruz | 63 | 3 | 4 | 4 | 93 |
| Argentina: Tierra del Fuego | 59 | 2 | 6 | 10 | 120 |
| Australia: Ashmore and Cartier Islands | 15 | 1 | 1 | 1 | 16 |
| Australia: Australian Capital Territory | 188 | 28 | 44 | 188 | 3833 |
| Australia: Christmas Island | 83 | 3 | 4 | 25 | 298 |
| Australia: Cocos-Keeling Islands | 15 | 2 | 5 | 6 | 24 |
| Australia: Coral Sea Territory | 25 | 3 | 7 | 8 | 59 |
| Australia: Macquarie Island | 22 | 1 | 4 | 5 | 42 |
| Australia: New South Wales | 532 | 110 | 2274 | 10464 | 133105 |
| Australia: Norfolk Island | 39 | 3 | 1 | 7 | 72 |
| Australia: Northern Territory | 372 | 42 | 779 | 1973 | 39918 |
| Australia: Queensland | 603 | 123 | 2913 | 11166 | 251905 |
| Australia: South Australia | 374 | 48 | 970 | 2034 | 30357 |
| Australia: Tasmania | 233 | 48 | 394 | 1170 | 15586 |
| Australia: Victoria | 477 | 144 | 2663 | 22431 | 397187 |
| Australia: Western Australia | 466 | 45 | 1317 | 2004 | 31760 |
| Austria | 62 | 4 | 5 | 8 | 141 |
| Bahamas | 1 | 1 | 1 | 1 | 1 |
| Belgium | 29 | 1 | 5 | 5 | 63 |
| Bhutan | 323 | 1 | 1 | 1 | 325 |
| Bolivia | 124 | 3 | 21 | 26 | 203 |
| Botswana | 401 | 6 | 22 | 32 | 1359 |
| Brazil: Acre | 36 | 1 | 1 | 3 | 38 |
| Brazil: Amazonas | 25 | 1 | 3 | 5 | 25 |
| Brazil: Mato Grosso | 102 | 2 | 10 | 11 | 175 |
| Brazil: Parana | 35 | 2 | 2 | 5 | 52 |
| Brazil: Rio de Janeiro | 33 | 1 | 1 | 4 | 42 |
| Brazil: São Paulo | 3 | 1 | 1 | 1 | 3 |
| Brunei | 21 | 2 | 2 | 2 | 23 |
| Cambodia | 227 | 4 | 4 | 18 | 377 |
| Canada: Alberta | 4 | 1 | 1 | 1 | 4 |
| Canada: British Columbia | 184 | 8 | 47 | 65 | 754 |
| Canada: Ontario | 237 | 6 | 11 | 36 | 1452 |
| Canada: Quebec | 220 | 2 | 126 | 412 | 2891 |
| Chile: Antofagasta | 11 | 1 | 2 | 2 | 11 |
| Chile: Araucanía | 19 | 1 | 1 | 1 | 19 |
| Chile: Atacama | 4 | 1 | 1 | 1 | 4 |
| Chile: Los Lagos | 51 | 1 | 6 | 11 | 69 |
| Chile: Magallanes | 47 | 2 | 8 | 13 | 70 |
| Chile: Santiago | 39 | 1 | 6 | 6 | 42 |
| Chile: Valparaíso | 70 | 3 | 9 | 12 | 91 |
| China: Beijing | 4 | 1 | 1 | 1 | 4 |
| China: Guangdong, Hong Kong | 156 | 7 | 10 | 30 | 603 |
| China: Guangxi | 25 | 1 | 8 | 8 | 63 |
| China: Hebei | 15 | 2 | 2 | 3 | 19 |
| China: Jiangsu, Shanghai | 9 | 2 | 2 | 2 | 10 |
| China: Taiwan | 24 | 1 | 6 | 6 | 33 |
| Colombia | 118 | 3 | 6 | 8 | 145 |
| Congo DR (Zaire) | 380 | 1 | 49 | 148 | 1084 |
| Cook Islands | 34 | 2 | 10 | 18 | 204 |
| Costa Rica | 211 | 4 | 12 | 13 | 328 |
| Côte d'Ivoire | 29 | 1 | 2 | 2 | 30 |
| Cuba | 57 | 2 | 3 | 6 | 77 |
| Czech Republic | 100 | 3 | 20 | 22 | 151 |
| Denmark | 81 | 5 | 23 | 24 | 279 |
| Djibouti | 67 | 1 | 6 | 9 | 89 |
| East Timor | 21 | 1 | 5 | 10 | 38 |
| Ecuador | 376 | 3 | 26 | 47 | 731 |
| Ecuador: Galapagos | 46 | 2 | 1 | 5 | 93 |
| Egypt | 22 | 3 | 6 | 6 | 30 |
| Eritrea | 18 | 1 | 2 | 3 | 22 |
| Estonia | 51 | 2 | 4 | 6 | 79 |
| Ethiopia | 404 | 1 | 69 | 156 | 1965 |
| Falkland Islands | 18 | 1 | 2 | 2 | 21 |
| Fiji | 72 | 10 | 39 | 74 | 769 |
| Finland | 32 | 4 | 6 | 7 | 55 |
| France | 174 | 7 | 42 | 78 | 880 |
| French Polynesia | 10 | 1 | 1 | 1 | 10 |
| Georgia | 4 | 1 | 2 | 2 | 4 |
| Germany | 73 | 6 | 14 | 14 | 155 |
| Greece | 34 | 1 | 2 | 4 | 60 |
| Guinea | 23 | 1 | 3 | 7 | 23 |
| Guyana | 2 | 1 | 1 | 1 | 2 |
| Hungary | 10 | 1 | 1 | 1 | 10 |
| Iceland | 52 | 2 | 6 | 12 | 159 |
| India: Delhi | 5 | 2 | 1 | 2 | 5 |
| India: Haryana | 9 | 1 | 1 | 1 | 9 |
| India: Himachal Pradesh | 56 | 1 | 2 | 2 | 67 |
| India: Jammu & Kashmir | 38 | 2 | 4 | 4 | 40 |
| India: Karnataka | 15 | 1 | 1 | 1 | 16 |
| India: Madhya Pradesh | 139 | 2 | 2 | 2 | 156 |
| India: Maharashtra | 5 | 1 | 1 | 2 | 8 |
| India: Rajasthan | 112 | 2 | 9 | 12 | 129 |
| India: Tamil Nadu | 2 | 1 | 1 | 1 | 2 |
| India: Uttar Pradesh | 26 | 2 | 3 | 4 | 31 |
| India: West Bengal | 71 | 2 | 2 | 9 | 184 |
| Indian Ocean | 20 | 1 | 4 | 4 | 32 |
| Indonesia: Java | 293 | 7 | 29 | 55 | 1273 |
| Indonesia: Kalimantan | 31 | 1 | 3 | 3 | 37 |
| Indonesia: Lesser Sundas | 22 | 1 | 3 | 3 | 22 |
| Indonesia: Maluku Islands | 70 | 3 | 9 | 12 | 100 |
| Indonesia: Sumatra | 218 | 1 | 1 | 1 | 220 |
| Ireland | 110 | 4 | 9 | 9 | 177 |
| Israel | 189 | 4 | 37 | 46 | 621 |
| Italy | 149 | 7 | 24 | 28 | 546 |
| Japan | 227 | 5 | 38 | 54 | 892 |
| Japan: Nansei Shoto | 54 | 2 | 3 | 5 | 113 |
| Kenya | 595 | 5 | 49 | 99 | 2138 |
| Kosovo | 16 | 1 | 1 | 1 | 16 |
| Kyrgyzstan | 95 | 1 | 5 | 5 | 149 |
| Latvia | 29 | 1 | 1 | 1 | 29 |
| Lesotho | 31 | 1 | 6 | 7 | 40 |
| Luxembourg | 14 | 1 | 2 | 3 | 22 |
| Madagascar | 60 | 1 | 9 | 9 | 69 |
| Malawi | 224 | 2 | 7 | 12 | 394 |
| Malaysia: Malaya | 372 | 8 | 49 | 96 | 1862 |
| Malaysia: Sabah | 286 | 4 | 12 | 24 | 696 |
| Malaysia: Sarawak | 220 | 3 | 4 | 6 | 271 |
| Mauritius | 30 | 2 | 4 | 6 | 60 |
| Mexico: Baja California | 3 | 1 | 1 | 1 | 3 |
| Mexico: Baja California Sur | 20 | 1 | 1 | 1 | 20 |
| Mexico: Chiapas | 17 | 1 | 1 | 1 | 18 |
| Mexico: Guerrero | 36 | 1 | 1 | 1 | 36 |
| Mexico: Morelos | 13 | 1 | 1 | 1 | 13 |
| Mexico: Puebla | 6 | 1 | 1 | 1 | 6 |
| Mexico: Quintana Roo | 1 | 1 | 1 | 1 | 1 |
| Mexico: Veracruz | 6 | 1 | 1 | 1 | 6 |
| Mongolia | 22 | 2 | 3 | 9 | 38 |
| Namibia | 300 | 3 | 16 | 18 | 591 |
| Nepal | 387 | 5 | 18 | 30 | 1094 |
| Netherlands | 67 | 3 | 14 | 16 | 178 |
| New Caledonia | 86 | 2 | 17 | 22 | 339 |
| New Zealand | 176 | 23 | 153 | 252 | 3807 |
| New Zealand: Auckland and Campbell Is. | 15 | 1 | 2 | 2 | 18 |
| New Zealand: Chatham Islands | 24 | 1 | 1 | 1 | 26 |
| Norway | 129 | 4 | 32 | 56 | 626 |
| Pakistan | 12 | 1 | 1 | 1 | 12 |
| Palestine | 6 | 1 | 3 | 3 | 6 |
| Panama | 322 | 3 | 15 | 45 | 1019 |
| Papua New Guinea | 414 | 4 | 76 | 165 | 1624 |
| Paraguay | 8 | 1 | 1 | 2 | 8 |
| Peru | 148 | 2 | 8 | 8 | 185 |
| Philippines | 296 | 3 | 9 | 12 | 386 |
| Poland | 21 | 1 | 3 | 3 | 37 |
| Portugal | 81 | 2 | 9 | 10 | 125 |
| Russia: Ivanovo | 5 | 1 | 1 | 1 | 5 |
| Russia: Krasnodar | 12 | 1 | 1 | 1 | 12 |
| Russia: Leningrad | 24 | 2 | 3 | 4 | 41 |
| Russia: Moscow | 27 | 2 | 4 | 10 | 67 |
| Russia: Rostov | 26 | 1 | 1 | 1 | 26 |
| Russia: Vladimir | 8 | 1 | 1 | 1 | 8 |
| Russia: Yaroslavl | 3 | 1 | 1 | 1 | 3 |
| Rwanda | 287 | 1 | 22 | 78 | 780 |
| Seychelles | 45 | 2 | 7 | 13 | 108 |
| Singapore | 173 | 10 | 16 | 53 | 925 |
| Slovenia | 34 | 2 | 5 | 6 | 58 |
| Solomon Islands | 38 | 1 | 4 | 4 | 58 |
| Somalia | 119 | 1 | 13 | 28 | 186 |
| South Africa | 676 | 12 | 415 | 518 | 13598 |
| South Georgia and the South Sandwich Islands | 21 | 1 | 2 | 3 | 27 |
| South Korea | 85 | 1 | 1 | 2 | 93 |
| South Orkneys | 5 | 1 | 1 | 1 | 5 |
| Spain | 240 | 9 | 79 | 136 | 2124 |
| Sri Lanka | 181 | 2 | 9 | 10 | 294 |
| Swaziland | 58 | 3 | 6 | 6 | 68 |
| Sweden | 132 | 6 | 55 | 85 | 852 |
| Switzerland | 108 | 5 | 14 | 31 | 342 |
| Syria | 10 | 1 | 1 | 1 | 10 |
| Tanzania | 255 | 6 | 7 | 15 | 514 |
| Tasman Sea | 21 | 2 | 5 | 5 | 33 |
| Thailand | 454 | 9 | 58 | 91 | 1898 |
| Tonga | 23 | 1 | 1 | 1 | 23 |
| Turkey | 148 | 2 | 20 | 24 | 330 |
| Uganda | 29 | 1 | 3 | 4 | 34 |
| Ukraine | 6 | 1 | 3 | 3 | 6 |
| United Arab Emirates | 18 | 1 | 2 | 2 | 18 |
| United Kingdom | 345 | 24 | 321 | 759 | 8284 |
| United States of America: Alabama | 1 | 1 | 1 | 1 | 1 |
| United States of America: Alaska | 78 | 2 | 7 | 8 | 156 |
| United States of America: Arizona | 213 | 6 | 18 | 30 | 490 |
| United States of America: Arkansas | 75 | 1 | 6 | 42 | 82 |
| United States of America: California | 315 | 12 | 80 | 175 | 1767 |
| United States of America: Colorado | 91 | 5 | 16 | 23 | 169 |
| United States of America: Delaware | 46 | 1 | 1 | 1 | 46 |
| United States of America: Florida | 240 | 9 | 27 | 79 | 1920 |
| United States of America: Georgia | 42 | 2 | 2 | 2 | 43 |
| United States of America: Hawaii | 47 | 5 | 7 | 8 | 81 |
| United States of America: Idaho | 33 | 2 | 2 | 2 | 35 |
| United States of America: Indiana | 7 | 1 | 1 | 1 | 7 |
| United States of America: Louisiana | 25 | 1 | 3 | 4 | 28 |
| United States of America: Maine | 88 | 1 | 1 | 2 | 105 |
| United States of America: Maryland | 109 | 2 | 13 | 18 | 238 |
| United States of America: Massachusetts | 94 | 3 | 6 | 7 | 140 |
| United States of America: Michigan | 64 | 1 | 5 | 8 | 90 |
| United States of America: Minnesota | 57 | 1 | 1 | 1 | 57 |
| United States of America: Mississippi | 6 | 1 | 1 | 1 | 6 |
| United States of America: Nevada | 69 | 3 | 2 | 4 | 80 |
| United States of America: New Hampshire | 1 | 1 | 1 | 1 | 1 |
| United States of America: New Jersey | 250 | 5 | 6 | 10 | 481 |
| United States of America: New Mexico | 60 | 2 | 5 | 5 | 72 |
| United States of America: New York | 133 | 7 | 10 | 25 | 419 |
| United States of America: North Carolina | 70 | 2 | 4 | 4 | 77 |
| United States of America: Oregon | 131 | 3 | 8 | 11 | 223 |
| United States of America: Pennsylvania | 23 | 1 | 1 | 1 | 23 |
| United States of America: South Carolina | 128 | 4 | 7 | 8 | 248 |
| United States of America: Tennessee | 14 | 2 | 3 | 4 | 15 |
| United States of America: Texas | 77 | 2 | 8 | 8 | 90 |
| United States of America: Utah | 44 | 2 | 4 | 4 | 44 |
| United States of America: Virginia | 60 | 1 | 1 | 5 | 79 |
| United States of America: Washington | 122 | 2 | 12 | 14 | 225 |
| United States of America: West Virginia | 3 | 1 | 2 | 3 | 3 |
| United States of America: Wisconsin | 48 | 1 | 3 | 31 | 53 |
| United States of America: Wyoming | 1 | 1 | 1 | 2 | 2 |
| Uzbekistan | 76 | 1 | 3 | 3 | 109 |
| Vanuatu | 7 | 1 | 1 | 1 | 7 |
| Venezuela | 86 | 2 | 7 | 8 | 102 |
| Vietnam | 347 | 5 | 17 | 25 | 694 |
| Virgin Islands (US) | 34 | 1 | 9 | 13 | 59 |
| Zambia | 510 | 4 | 10 | 13 | 707 |
| Zimbabwe | 349 | 4 | 12 | 13 | 531 |