Published in Journal für Ornithologie, in 1913, in volume 61, pages 143-161

Published in Journal für Ornithologie, in 1913, in volume 61, pages 41-51

Published in Journal für Ornithologie, in 1913, in volume 61, pages 161-167

Published in Journal für Ornithologie, in 1913, in volume 61, pages 125-142

Published in Journal für Ornithologie, in 1913, in volume 61, pages 1-40

Published in Journal für Ornithologie, in 1913, in volume 61, pages 167-169

Published in Journal für Ornithologie, in 1913, in volume 61, pages 52-117

Published in Journal für Ornithologie, in 1913, in volume 61, pages 195-204

Published in Journal für Ornithologie, in 1913, in volume 61, pages 169-179

Published in Journal für Ornithologie, in 1913, in volume 61, pages 179-188

Published in Journal für Ornithologie, in 1913, in volume 61, pages 188-194

Published in Journal für Ornithologie, in 1913, in volume 61, pages 402-404

Published in Journal für Ornithologie, in 1913, in volume 61, pages 362-370

Published in Journal für Ornithologie, in 1913, in volume 61, pages 404-408

Published in Journal für Ornithologie, in 1913, in volume 61, pages 205-228

Published in Journal für Ornithologie, in 1913, in volume 61, pages 395-397

Published in Journal für Ornithologie, in 1913, in volume 61, pages 371-379

Published in Journal für Ornithologie, in 1913, in volume 61, pages 229-361

Published in Journal für Ornithologie, in 1913, in volume 61, pages 380-383

Published in Journal für Ornithologie, in 1913, in volume 61, pages 398-401

Published in Journal für Ornithologie, in 1913, in volume 61, pages 661-663

Published in Journal für Ornithologie, in 1913, in volume 61, pages 618-630

Published in Journal für Ornithologie, in 1913, in volume 61, pages 612-617

Published in Journal für Ornithologie, in 1913, in volume 61, pages 630-661

Published in Journal für Ornithologie, in 1913, in volume 61, pages 597-611

Published in Journal für Ornithologie, in 1913, in volume 61, pages 561-597

Published in Journal für Ornithologie, in 1913, in volume 61, pages 64-75

Published in Journal für Ornithologie, in 1913, in volume 61, pages 15-59

Published in Journal für Ornithologie, in 1913, in volume 61, pages 3-14

Published in Journal für Ornithologie, in 1913, in volume 61, pages 455-468

Published in Journal für Ornithologie, in 1913, in volume 61, pages 444-455

Published in Journal für Ornithologie, in 1913, in volume 61, pages 546-549

Published in Journal für Ornithologie, in 1913, in volume 61, pages 409-443

Published in Journal für Ornithologie, in 1913, in volume 61, pages 549-556

Published in Journal für Ornithologie, in 1913, in volume 61, pages 469-539

Published in Journal für Ornithologie, in 1913, in volume 61, pages 556-558

Published in Journal für Ornithologie, in 1913, in volume 61, pages 558-560

Published in Journal für Ornithologie, in 1913, in volume 61, pages 71-72