1 91 8.] Rec€7it1y published Ornithological Works. 513 



York Museum temporarily to undertake at Washington the 

 duties of Director of the Bureau of Publications of the 

 American Red Cross. He has found time, however, to 

 write a notice on the plumages of the American Wrens and 

 of the American Swallows to accompany coloured plates 

 by Mr. Fuertes illustrating these birds, while in the case 

 of the latter group we have an additional article by 

 Mr. Oberholser on their migrations. 



Tliere are a large number of more popular articles, 

 generally illustrated with good photographs, dealing with 

 American birds under every aspect. 



'Bird-Lore' is also the official organ of the powerful 

 National Association of Audubon Societies, which is a 

 central organization having branches or affiliated societies 

 in practically every State in the Union, the object of which 

 is the protection of birds by education, by legislation 

 and by other means, A good proportion of the matter in 

 'Bird-Lore' is devoted to this propaganda, which has cer- 

 tainly had a wonderful effect in rousing the people of the 

 United States to the importance of bird protection, not only 

 for sentimental, but for economic reasons. 



British Birds. 



[British Birds. Vol. xi., June 1917-May 1918. London (Witlierby).] 

 In November last Mr. H. F. Witherby accepted a com- 

 mission in the R.N.V.R., and as this involved his absence 

 from England, he had temporarily to relinquish the editor- 

 ship of ' British Birds.' His place has been taken by the 

 Rev. F, C. R. Jourdain, who had previously acted as 

 Assistant Editor. We understand that Lieut. Witherby is 

 doing exceedingly good work where he is now stationed and 

 is undoubtedly assisting to " get on with the war," and we 

 wish him all good luck. 



Perhaps the most important articles in the present volume 

 of ' British Birds ' are those on moult. Mr. Witherby him- 

 self, before he left England, published two contributions on 

 the moults of the British Warblers and Thrushes. These 



