Johann Andreas Naumann's ... Naturgeschichte der Vögel Deutschlands, nach einigen Erfahrungen entworfen. 13.T.Plates
Leipzig :G. Fleischer,1820-1860.
biodiversitylibrary.org/page/33755311
Mike Prince|sourceurl=https://flickr.com/photos/70804987@N00/4782226116%7Carchive=%7Creviewdate=2021-11-09 02:50:12|reviewlicense=cc-by-2.0|reviewer=FlickreviewR 2
Wikimedia Commons
Description: Screaming flocks were a great sight and sound throughout the medina. Date: 29 April 2010, 08:21. Source: Alpine Swift. Author: Mike Prince from Bangalore, India.