Tr 
n the spring of 1910 I had the opportunity to realize my long cherished wish to 
make the acquaintance, by my own experience, of the bird-life in the hot zones. 
My plan to visit the Cap-York peninsula in Australia was changed through the 
proposal of the entomologist E. MJöBErRG Ph. D. that I should accompany him to 
Western Australia. In the meantime we abandoned his project to investigate 
the southern parts of the country, choosing instead the tropical North West Australia, 
where the ornithological researches described below were made. 
Mr. CYRUS WIDELL accompanied us as taxidermist. The then amanuensis of 
the State Museum Y. LAURELL took part in the expedition at his own expense as 
ethnographer. 
For the travelling studentship that I was granted by the Museum of Natural 
History in Stockholm, which made my journey possible, and for the advice given 
by the Intendent Professor E. LÖNNBERG Ph. D. in my work with the collection of 
about 820 birds, collected during the expedition and now belonging to the State Mu- 
seum, I wish to express my respectful gratitude. 
My sincerest thanks are due to the curator of the West Australian museum in 
Perth, BERNARD H. WOODWARD and the Swedish Consul there, RICHARD STRELITZ, 
for the kindness shown to me during my stay in Australia. Moreover I have to 
thank Mr. A. F. CROSSMAN, solicitor in Broome, Mr. H. VON DER PFORDTEN, and the 
taxidermist Mr. J. P. RoGERS, whose personal acquaintance with the bird-life in 
Dampier land and Kimberby was kindly placed at my disposal. 
Finally my hearty thanks to both my trusty companions Y. LAURELL, who to 
a certain extent defrayed the expenses of our travels, and to CYRUS WIDELL, who 
in his capacity as taxidermist was of the greatest service to me. 
Stenstorp, Sweden, March 1917. 
Rudolf Söderberg. 
