Expansion and migrations of the Cattle Egret. - D.N. Nankinov. - Berkut. 7 (1-2). 1998. - P. 19-24.
The Cattle Egret has inhabited for a very short time all the continents on the Earth. It penetrated in South America mainly from Africa, by the islands of Green Nose, not only through Europe as it was thought of. Its settlement in Europe was not so fast as in America. It has been observed several times in Bulgaria, it is supposed that it had been nesting there in the end of the past century. The results of the ringing show that the regular inhabit within the boarders of a definite area is typical of the species as well as roaming in different direc-tions, and also distant migrations, reaching up to several thousands kilometers. [Russian].
Key words: Cattle Egret, Bubulcus ibis, breeding range, expansion, migration.
Address: D.N. Nankinov, Institut of Zoology, Boul. Tsar Osvoboditel 1, 1000 Sofia, Bulgaria.