Feather keratins, morphology and ecology in the taxonomy of crossbills and redpolls
The Scottish Crossbill, described as Lexis' curvirostra scotica, is shown to be more closely related to L.c.curvirostra than to L.pytyopsittacus (with which it had often been placed) in voice and morphology. Field studies in north-east Scotland revealed scotica and curvirostra breeding side by...
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University of Aberdeen
1977
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| Online Access: | http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.462303 |