Zur Chemotaxonomie der Rabenvögel. Zusammensetzung der Bürzeldrüsensekrete der Dohle (Coloeus monedula), Raben- (Corvus corone corone) und Nebelkrähe (Corvus corone cornix) / Chemotaxonomy of Corvidae. The Uropygial Gland Fat from the Jackdaw (Coloeus monedula), Carrion Crow (Corvus corone corone) and the Hooded Crow (Corvus corone corvix)

Abstract

The uropygial gland fat from the jackdaw, the carrion and the hooded crow are shown to be ester waxes. Chemotaxonomically the latter two are undiscernible. Their uropygial waxes consist of 4- and 6-monomethyl-, 4.6-, 4.8-, and 4.10-dimethyl- and 4.6.10- and 4.6.12-trimethyl- substituted fatty acids and n- (59.7%) as well as monomethyl-branched alkanols with branches in 4-, 6-, 10-, and 14-position. In contrast to the jackdaw they show no relation to the earlier investigated rook. The uropygial gland fat from the jackdaw is composed of n- (35.7%) and 2-methyl-substituted fatty acids (64.3%) and w-(87.5%) and 2 methyl-substituted alkanols (12,5).