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 [ 1995. ]. The Microstructure of Feathers of Israeli Birds. Publ. Tel Aviv University, 302 pp.
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