94 



appear to have touched Dorset, and only a single bird here 

 and there was recorded from Hampshire, so that this 

 immigration falls naturally into two divisions — an eastern 

 and a western. 



The eastern wing spread northwards, the forerunners 

 reaching Essex and Berkshire on April 11th and 12th, 

 Suffolk and East Yorkshire on the 15th, and Northumber- 

 land on the 22nd, while two days after the second arrival 

 in Sussex on April 15th, the numbers increased in Essex. 



The western wing appearing in west Somerset from 

 April 11th to 17th also spread northwards, but with an 

 easterly trend. Staffordshire and Glamorgan were 

 reached on April 13th, Radnor on the 14th, Shropshire 

 and Lancashire on the 15th, Cumberland on the 17th, 

 while Merioneth and Furness (Lancashire), in the extreme 

 west, were not reached until the 18th and 20th. 



The second immigration was first noticed in Devon on 

 April 18th, and in Sussex on April 19th, while a further 

 arrival occurred in the latter county on April 22nd. The 

 eastern wing of this immigration appears to have joassed, 

 directly after its arrival, northwards into Essex on April 

 19th, while Berkshire and Cambridge were reached on the 

 21st, Notts on the 22nd, east Norfolk and east Yorkshire 

 on the 24th. 



The western wing also ajjpears to have gone immedi- 

 ately northwards, as the birds left Devon on the day after 

 their arrival and reached Somerset on the following day 

 (April 20th), and Shropshire, Lancashire and West York- 

 shire on the 24th. A certain number of the birds 

 composing this immigration appear to have been summer- 

 residents of the southern counties. 



The tliircl immigration, which seems to have been the 

 largest, was recorded in Sussex on April 25th and 27th, 

 and was noted in Somerset on April 26th, while the 

 increase in Hampshire on April 24th may have been due 

 to the forerunners of this movement or to a spread 

 westward of the former immigrants in Sussex. The 

 eastern portion of this immigration seems to have travelled 

 mainly northwards, Suffolk and Norfolk being reached on 



