450 Recently puhlished Ornithological Works. [Ibis, 



so-called partial migrants among British birds, Mr. Witlierby 

 has collected and summarized all the data he has received 

 as to the movements of the four species mentioned in 

 his title. He has only taken into consideration those cases 

 where a bird has been ringed as a nestling and recovered in 

 winter. 



He finds that in the case of the British Song-Thrush 

 about 50 per cent, of recoveries were close to the breeding- 

 place and about 50 per cent, were away. From the latter 

 returns the winter movement appears to be a south-western 

 one, no less than six birds which were bred in south-west 

 Scotland and Lancashire having been recorded in Ireland. 

 Two also were taken in France and one in Spain, proving 

 that some individuals at least of our home-bred Thrushes 

 migrate southwards in winter. 



The Blackbird appears to be more of a stay-at-home ; 

 over 70 per cent, of those ringed have been recovered close 

 by their nesting-places, while of the 28 per cent, recovered 

 away, only one, taken in FrancCj is from outside the British 

 Islands. 



In the case of Lapwings there are more records, and those 

 of Scottish and English nestlings have been separated. 

 It is found that while over 80 per cent, of the former are 

 recovered away from the nesting-place, the percentage is 

 only 57 per cent, in the case of the latter. The favourite 

 wintering ground of the Scottish birds is undoubtedly 

 Ireland, while that of the English birds is more widespread, 

 extending to Portugal and Morocco. 



For the Woodcock the results are much the same ; the 

 recoveries away from the nesting-place are about 54 per cent., 

 and the favourite wintering ground is Ireland. 



The interest of Mr. Witherby's results is very considerable, 

 but it must be borne in mind that the actual number of 

 recoveries up to now is not very large and hardly warrant 

 absolute deductions : at the same time it is most interesting 

 to know the tendency of the data as far as they go. 



