Literature
- Dunning, J. B. Jr. (ed.). 1993. CRC Handbook of Avian Body Masses. CRC Press, Boca Raton, Florida. 371 pp.
- Shamoun, J. and Y. Yom-Tov [ 1996b. ]. Addition to The Microstructure of Feathers of Israeli Birds. Publ. Tel Aviv University, 79 pp.