| Population | Answer | % Correct |
|---|---|---|
| 24 billion | domestic chicken | 92%
|
| 173 million | common pheasant | 27%
|
| 120 million | common swift | 19%
|
| 27.5 million | black grouse | 12%
|
| 27.5 million | blue-crownded motmot | 12%
|
| 145 million | great spotted woodpecker | 12%
|
| 50 million | Antarctic prion (petrel) | 8%
|
| 63 million | common cuckoo | 8%
|
| 168 million | common quail | 8%
|
| 40 million | willow ptarmigan | 8%
|