Published in Journal für Ornithologie, in 1902, in volume 50, pages 458-472

Published in Journal für Ornithologie, in 1902, in volume 50, pages 473-475

Published in Journal für Ornithologie, in 1902, in volume 50, pages 390-457

Published in Journal für Ornithologie, in 1902, in volume 50, pages 369-390

Published in Journal für Ornithologie, in 1902, in volume 50, pages 348

Published in Journal für Ornithologie, in 1902, in volume 50, pages 331-348

Published in Journal für Ornithologie, in 1902, in volume 50, pages 284-290

Published in Journal für Ornithologie, in 1902, in volume 50, pages 265-283

Published in Journal für Ornithologie, in 1902, in volume 50, pages 290-331

Published in Journal für Ornithologie, in 1902, in volume 50, pages 356-361

Published in Journal für Ornithologie, in 1902, in volume 50, pages 349-356

Published in Journal für Ornithologie, in 1902, in volume 50, pages 366-368

Published in Journal für Ornithologie, in 1902, in volume 50, pages 361-363

Published in Journal für Ornithologie, in 1902, in volume 50, pages 258-263

Published in Journal für Ornithologie, in 1902, in volume 50, pages 257-258

Published in Journal für Ornithologie, in 1902, in volume 50, pages 210-237

Published in Journal für Ornithologie, in 1902, in volume 50, pages 238-253

Published in Journal für Ornithologie, in 1902, in volume 50, pages 137-209

Published in Journal für Ornithologie, in 1902, in volume 50, pages 254-257

Published in Journal für Ornithologie, in 1902, in volume 50, pages 121-125

Published in Journal für Ornithologie, in 1902, in volume 50, pages 127-131

Published in Journal für Ornithologie, in 1902, in volume 50, pages 131-134

Published in Journal für Ornithologie, in 1902, in volume 50, pages 9-43

Published in Journal für Ornithologie, in 1902, in volume 50, pages 87-91

Published in Journal für Ornithologie, in 1902, in volume 50, pages 70-86

Published in Journal für Ornithologie, in 1902, in volume 50, pages 125-127

Published in Journal für Ornithologie, in 1902, in volume 50, pages 44-69

Published in Journal für Ornithologie, in 1902, in volume 50, pages 135-136

Published in Journal für Ornithologie, in 1902, in volume 50, pages 69

Published in Journal für Ornithologie, in 1902, in volume 50, pages 91-101

Published in Journal für Ornithologie, in 1902, in volume 50, pages 101-113

Published in Journal für Ornithologie, in 1902, in volume 50, pages 1-9