| Authors(s) | Witherby H.F., Jourdain F.C.R., Ticehurst N.F. and Tucker B.W. |
| Year | 1944 |
| Title | The handbook of British birds. London |
| Authors(s) | Witherby H.F., Jourdain F.C.R., Ticehurst N.F. and Tucker B.W. |
| Year | 1944 |
| Title | The handbook of British birds. London |