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 215-218

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 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

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