364 Recently published Ornithological Works* 



more struck by the exceptional beauty of the plates and the 

 thorough treatment of the habits of the species. How 

 thorough this is may be judged from the fact that the letter- 

 press deals with but four species and that the Whitethroat 

 alone occupies twenty-three pages, the Lesser Whitethroat 

 twenty. Of the Siberian Chiff chaff (Phylloscopus tristis) and 

 the Greenish Willow-Warbler (P. viridanus), which do not 

 breed in Britain, only the description and distribution are 

 given, in accordance with the scheme of the work. Among 

 the many points of interest may be mentioned the account 

 of the difference in the songs of various species in different 

 localities, the behaviour of the Lesser Whitethroat when its 

 young are in danger, and several curious habits of the 

 Common Whitethroat, such as the building of extra and 

 useless nests, the habit of removing or even swallowing 

 small leaves dropped into the structure, and so forth ; but it 

 will be evident that these do not represent a tithe of the total 

 information. Coloured plates are given of all the species, 

 and plain plates in the case of the two first-named, to exhibit 

 particular attitudes ; but the plate of eggs which is the 

 frontispiece to this Part is perhaps most striking of all, and 

 gives figures of a well chosen series with admirable fidelity. 



37. Migration-Report of the B. 0. C. 



[Reporton the Immigrations of Summer Eesidents in the Spring of 1908; 

 also Notes on the migratory movements and Records received from 

 light-houses and light-vessels during the autumn of 1907. By the 

 Committee appointed hy the British Ornithologists' Club. Bull. B. 0. C. 

 vol. xxiv. Nov. 1909 ; 235 pp.] 



The third Report of the Committee of the B. O. C. on 

 Migration has increased in size to a volume of 235 pages. 

 Besides the ordinary reports on the scheduled species in the 

 Spring of 1908, each of which is illustrated by a map, notes 

 are given on the migratory movements observed during the 

 previous autumn. Some of these are of considerable in- 

 terest, for example those of the Blackbird {Turdus merula), 

 which is usually considered a very stay-at-home species. 



