Literature
- Bauer, K. M. and U. N. Glutz von Blotzheim 1966. Handbuch der Vögel Mitteleuropas 1. Akad. Verlagsgesellschaft, Frankfurt am Main, 483 pp.
- Brom, T. G. 1986. Microscopic identification of feathers and feather fragments of Palearctic birds. Bijdragen tot de dierkunde 56 (2): 181-204.
- Brom, T. G. 1991a. The diagnostic and phylogenetic significance of feather structures. Published thesis, University of Amsterdam.
- Shamoun, J. and Y. Yom-Tov [ 1995. ]. The Microstructure of Feathers of Israeli Birds. Publ. Tel Aviv University, 302 pp.