Summary[edit] Description: Male Parrot Crossbill (Loxia pytyopsittacus) sitting in a Spruce tree. Picture taken at Smithska udden, Gothenburg, Sweden. Date: 21 October 2007. Source: Own work. Author: Oskila.
Johann Andreas Naumann's ... Naturgeschichte der Vgel Deutschlands, nach einigen Erfahrungen entworfen. 13.T.PlatesLeipzig :G. Fleischer,1820-1860.biodiversitylibrary.org/page/33755235