Published in Journal für Ornithologie, in 1881, in volume 29, pages 51-65

Published in Journal für Ornithologie, in 1881, in volume 29, pages 65-69

Published in Journal für Ornithologie, in 1881, in volume 29, pages 70-102

Published in Journal für Ornithologie, in 1881, in volume 29, pages 103-107

Published in Journal für Ornithologie, in 1881, in volume 29, pages 107-110

Published in Journal für Ornithologie, in 1881, in volume 29, pages 110-111

Published in Journal für Ornithologie, in 1881, in volume 29, pages 177-188

Published in Journal für Ornithologie, in 1881, in volume 29, pages 188-196

Published in Journal für Ornithologie, in 1881, in volume 29, pages 196-203

Published in Journal für Ornithologie, in 1881, in volume 29, pages 203-208

Published in Journal für Ornithologie, in 1881, in volume 29, pages 212-215

Published in Journal für Ornithologie, in 1881, in volume 29, pages 215-218

Published in Journal für Ornithologie, in 1881, in volume 29, pages 219-222

Published in Journal für Ornithologie, in 1881, in volume 29, pages 223

Published in Journal für Ornithologie, in 1881, in volume 29, pages 224

Published in Journal für Ornithologie, in 1881, in volume 29, pages 225-289

Published in Journal für Ornithologie, in 1881, in volume 29, pages 289-323

Published in Journal für Ornithologie, in 1881, in volume 29, pages 323-332

Published in Journal für Ornithologie, in 1881, in volume 29, pages 332-336

Published in Journal für Ornithologie, in 1881, in volume 29, pages 336

Published in Journal für Ornithologie, in 1881, in volume 29, pages 400-401

Published in Journal für Ornithologie, in 1881, in volume 29, pages 401-405

Published in Journal für Ornithologie, in 1881, in volume 29, pages 405-416

Published in Journal für Ornithologie, in 1881, in volume 29, pages 424-428