Published in Journal für Ornithologie, in 1901, in volume 49, pages 1-5
Published in Journal für Ornithologie, in 1901, in volume 49, pages 6-46
Published in Journal für Ornithologie, in 1901, in volume 49, pages 46-57
Published in Journal für Ornithologie, in 1901, in volume 49, pages 57-60
Published in Journal für Ornithologie, in 1901, in volume 49, pages 73-80
Published in Journal für Ornithologie, in 1901, in volume 49, pages 81-99
Published in Journal für Ornithologie, in 1901, in volume 49, pages 99-102
Published in Journal für Ornithologie, in 1901, in volume 49, pages 105-109
Published in Journal für Ornithologie, in 1901, in volume 49, pages 109-114
Published in Journal für Ornithologie, in 1901, in volume 49, pages 115
Published in Journal für Ornithologie, in 1901, in volume 49, pages 116-156
Published in Journal für Ornithologie, in 1901, in volume 49, pages 165-168
Published in Journal für Ornithologie, in 1901, in volume 49, pages 169-190
Published in Journal für Ornithologie, in 1901, in volume 49, pages 190-210
Published in Journal für Ornithologie, in 1901, in volume 49, pages 210-220
Published in Journal für Ornithologie, in 1901, in volume 49, pages 220-229
Published in Journal für Ornithologie, in 1901, in volume 49, pages 230-245
Published in Journal für Ornithologie, in 1901, in volume 49, pages 246-264
Published in Journal für Ornithologie, in 1901, in volume 49, pages 265-269
Published in Journal für Ornithologie, in 1901, in volume 49, pages 270-273
Published in Journal für Ornithologie, in 1901, in volume 49, pages 274-275
Published in Journal für Ornithologie, in 1901, in volume 49, pages 275-276
Published in Journal für Ornithologie, in 1901, in volume 49, pages 276-279
Published in Journal für Ornithologie, in 1901, in volume 49, pages 279-280
Published in Journal für Ornithologie, in 1901, in volume 49, pages 283-285
Published in Journal für Ornithologie, in 1901, in volume 49, pages 286-288
Published in Journal für Ornithologie, in 1901, in volume 49, pages 289-303
Published in Journal für Ornithologie, in 1901, in volume 49, pages 304-322
Published in Journal für Ornithologie, in 1901, in volume 49, pages 322-334
Published in Journal für Ornithologie, in 1901, in volume 49, pages 337-359
Published in Journal für Ornithologie, in 1901, in volume 49, pages 360-361
Published in Journal für Ornithologie, in 1901, in volume 49, pages 361-381
Published in Journal für Ornithologie, in 1901, in volume 49, pages 383-384
Published in Journal für Ornithologie, in 1901, in volume 49, pages 385-393
Published in Journal für Ornithologie, in 1901, in volume 49, pages 457-461
Published in Journal für Ornithologie, in 1901, in volume 49, pages 461-467
Published in Journal für Ornithologie, in 1901, in volume 49, pages 467-468