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Title: Colour-categories of male Pied flycatchers in spring
Authors: Bub, Hans
Keywords: Birds -- Malta
Pied flycatcher
Narcissus flycatchers
Birds -- Anatomy
Issue Date: 1985
Publisher: Malta Ornithological Society
Citation: Bub, H. (1985). Colour-categories of male Pied flycatchers in spring. Il-Merill, 23, 12.
Abstract: Professor Rudolph Drost was the first to devote full attention to this theme. in the numerous male Pied Flycatchers Ficedula hypoleuca on sprinq migration on Heliqoland the upper-parts showed considerable variation in colour. While in some males the upper-part was black throughout, others lacked black almost completely. Drost examined 237 skins from North and Central Europe, and worked out 7 colour-categories for classification. At the same time he was aware of the fact that more or different categories might be chosen. However, in the meantime these 7 categories have been generally accepted and proved to be practical.
Appears in Collections:Il-Merill : issue 23 : 1984-85
Il-Merill : issue 23 : 1984-85

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