Black Headed Gull

Coloured figures of the birds of the British Islands / issued by Lord Lilford.. London :R. H. Porter,1885-1897.. biodiversitylibrary.org/page/43049802

British ornithology :. Norwich :Bacon,1815-22.. biodiversitylibrary.org/page/48424597

Plates to Selby's Illustrations of British ornithology Edinburgh :Archibald Constable & Co. ;[1819]-1834. biodiversitylibrary.org/page/47276698

British ornithology London :Printed for the author, by Stephen Couchman ... and sold by Sherwood, Neely, and Jones,1811-1821. biodiversitylibrary.org/page/45633903

Coloured illustrations of British birds, and their eggs London :G.W. Nickisson,1842-1850. biodiversitylibrary.org/page/40372135

The birds of Norfolk London :J. Van Voorst,1866-1890. biodiversitylibrary.org/page/13500655

A history of British birds London,Pub. for the author by R.H. Porter [etc.]1883-85. biodiversitylibrary.org/page/13535297

Bilder-atlas zur Wissenschaftlich-populären Naturgeschichte der Vögel in ihren sämmtlichen Hauptformen Wien,K.K. Hof und Staatsdruckerei,1864. biodiversitylibrary.org/page/33050678

Johann Andreas Naumann's ... Naturgeschichte der Vögel Deutschlands, nach einigen Erfahrungen entworfen. 13.T.Plates Leipzig :G. Fleischer,1820-1860. biodiversitylibrary.org/page/33755537

Atlas de poche des oiseaux de France, Suisse, et Belgique, utiles ou nuisibles. ser.1 Paris :Librairie des sciences naturelles P. Klincksieck,1898- biodiversitylibrary.org/page/34992762