Arctic Skua

Recueil de divers oiseaux étrangers et peu communs A Nuremberg :Chez les Héritiers de Seligmann,1768-1776. biodiversitylibrary.org/page/41947988

Recueil de divers oiseaux étrangers et peu communs A Nuremberg :Chez les Héritiers de Seligmann,1768-1776. biodiversitylibrary.org/page/41947991

The birds of Washington Seattle :The Occidental Pub. Co.,1909. biodiversitylibrary.org/page/14458027

Naturgeschichte der Vögel Mitteleuropas Gera-Untermhaus,F.E. Köhler,1897-1905 [v.1, 1905] biodiversitylibrary.org/page/35159389

Naturgeschichte der Vögel Mitteleuropas Gera-Untermhaus,F.E. Köhler,1897-1905 [v.1, 1905] biodiversitylibrary.org/page/35159381

Naturgeschichte der Vögel Mitteleuropas Gera-Untermhaus,F.E. Köhler,1897-1905 [v.1, 1905] biodiversitylibrary.org/page/35159399

Coloured illustrations of British birds, and their eggs London :G.W. Nickisson,1842-1850. biodiversitylibrary.org/page/40372217

Coloured illustrations of British birds, and their eggs London :G.W. Nickisson,1842-1850. biodiversitylibrary.org/page/40372222

A history of British birds London,Pub. for the author by R.H. Porter [etc.]1883-85. biodiversitylibrary.org/page/13535301

Johann Andreas Naumann's ... Naturgeschichte der Vögel Deutschlands, nach einigen Erfahrungen entworfen. 13.T.Plates Leipzig :G. Fleischer,1820-1860. biodiversitylibrary.org/page/33755561

Johann Andreas Naumann's ... Naturgeschichte der Vögel Deutschlands, nach einigen Erfahrungen entworfen. 13.T.Plates Leipzig :G. Fleischer,1820-1860. biodiversitylibrary.org/page/33755563

The birds of America :. New York :J.B. Chevalier,1840-1844.. biodiversitylibrary.org/page/40419251

British birds in their haunts .... London,Dutton[1922]. biodiversitylibrary.org/page/13519540