576 Recentli/ published Ornithologicai If'ui'ks. [Ibis, 



of the Passerine birds only, leaving the non- Passerine groups 

 until a later date. The work is done very thoroughly and 

 completely, and the races of each species are listed with tiieir 

 distinguishing characters and their ranges. We find only 

 one new race desci'ibed in the present paper, Tschagra 

 senegala chadensis, though a good number have been de- 

 scribed in the ' Bulletin,' some as recently as January of 

 this year, so that the paper could not have been published 

 in 1921 as stated on the cover. Authors and editors should 

 be more careful in dating their papers correctly, as a wrong 

 date so often lands us in confusion. Judging by the many 

 misprints, the Belgian printers seem to have found some 

 trouble in setting up a paper in the English language. 



Barter and Rintoul on Scottish Ducks. 



[Some Scottish breedhif^ Ducks : their jirrival and dispersal. By 

 Evelyn V. Baxter and Leonora .Teftrey Rintoul. Pp. viii + 90. 

 Edinbiu-o-h (Oliver and lioyd), 1922. 8vo.] 



This little work contains a carefully compiled account of 

 the present and past distribution of nine species of Ducks, 

 which have all greatly increased their breeding-range in 

 Scotland during the last half century. These species are 

 the Gadwall, Wigeon, Shoveler, Pintail, Pochard, Eider, 

 Scoter, Goosander, and Red-breasted Goosander. The 

 accounts of the first four have already appeared in the 

 pages of the ' Scottish Naturalist,' and are here reprinted 

 with additional notes. The great increase in the breeding- 

 range of so many of our native ducks is most satisfactory, 

 and the causes which have contributed to it are discussed 

 in the final chapter. Bird-protection, the depopulation of 

 the country districts of Scotland, the improved facilities for 

 transport which have brought a plentiful supply of cheap 

 food to remote districts, and several minor causes have all 

 contributed to bring about this happy result, and we are 

 much indebted to the autliors of this work for the careful 

 way in which they have marshalled all the available records 

 and facts, and traced the lines of advance and dispersal of 

 the different species. 



