Sylvia nisoria (up) and Sylvia hortensis (bottom; originally described as Sylvia orphaea) Source: http://www.biologie.uni-hamburg.de/b-online/birds/2181_36...
This file has an extracted image: Thiere der Heimath - II. Vögel 1883 - cover.jpg....
DescriptionNaumann (II. 8) (8090118833).jpg n Sylvia nisoria (Bechst) Sperber-Grasmücke. 1 altes Männchen. 2 junger Yogel. Sylvia orphaea Temm. Sänger-Grasmücke...
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