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The grey wagtail (Motacilla cinerea) is a slender bird with a very long, black tail with white edges. This timid and lively bird is constantly on the move, and is characterized by the constant lifting of its tail. It has a bright yellow belly while its back is grey. The nest, in which it lays 4 - 6 eggs, is built along fast hill and mountain streams or rivers in rock crevices. It feeds on aquatic invertebrates and their larvae.
Croatian Post Ltd. Mostar has issued 4 commemorative postage stamps in a sheet of 8 stamps, a postmark and First Day Cover (FDC). Stamps and accompanying materials can also be purchased online at www.epostshop.ba
