Published in Journal für Ornithologie, in 1899, in volume 47, pages 387-417

Published in Journal für Ornithologie, in 1899, in volume 47, pages 419-420

Published in Journal für Ornithologie, in 1899, in volume 47, pages 417-418

Published in Journal für Ornithologie, in 1899, in volume 47, pages 306-308

Published in Journal für Ornithologie, in 1899, in volume 47, pages 375-386

Published in Journal für Ornithologie, in 1899, in volume 47, pages 288-289

Published in Journal für Ornithologie, in 1899, in volume 47, pages 125-151

Published in Journal für Ornithologie, in 1899, in volume 47, pages 289-290

Published in Journal für Ornithologie, in 1899, in volume 47, pages 290-292

Published in Journal für Ornithologie, in 1899, in volume 47, pages 207-213

Published in Journal für Ornithologie, in 1899, in volume 47, pages 286-288

Published in Journal für Ornithologie, in 1899, in volume 47, pages 151-207

Published in Journal für Ornithologie, in 1899, in volume 47, pages 434-448

Published in Journal für Ornithologie, in 1899, in volume 47, pages 421-434

Published in Journal für Ornithologie, in 1899, in volume 47, pages 533-535

Published in Journal für Ornithologie, in 1899, in volume 47, pages 535

Published in Journal für Ornithologie, in 1899, in volume 47, pages 112-121

Published in Journal für Ornithologie, in 1899, in volume 47, pages 95-103

Published in Journal für Ornithologie, in 1899, in volume 47, pages 33-74

Published in Journal für Ornithologie, in 1899, in volume 47, pages 122-123

Published in Journal für Ornithologie, in 1899, in volume 47, pages 75-95

Published in Journal für Ornithologie, in 1899, in volume 47, pages 1-32

Published in Journal für Ornithologie, in 1899, in volume 47, pages 123-124