Keywords: CBBM25 205.png Above Larus glaucodes <small>Meyen</small> Chroicocephalus maculipennis <small> Lichtenstein 1823 </small> ad <br/> Below Larus glaucodes <small>Meyen</small> Chroicocephalus maculipennis <small> Lichtenstein 1823 </small> juv Brown-hooded Gull adult above juvenile below wingtip pattern from below Catalogue of the birds in the British Museum http //www archive org/details/catalogueofbirds25brit Vol 25 Page 205 1896 Howard Saunders Osbert Salvin text PD-old CBBM25 Chroicocephalus maculipennis illustrations Feathers of Chroicocephalus |