11 



Owing to a scarcity of observers iu the west, the exact area 

 o£ arrival of some species was rather difficult to determine. 

 The Terns, ^Yhich arrived on the east and west coasts simul- 

 taneously, have been assigned to no particular route, and in 

 the case of the Common Sandpiper a lack of definite data 

 has obliged us to adopt a similar course. The migrations of 

 three species, viz. the Ring-Ouzel, Pied Flycatcher and 

 White Wagtail, offered difficulties, as they did not always 

 seem to follow the same course^ some taking place on the 

 western part of the south coast and others on the eastern. 

 Many individuals of these species undoubtedly arrived by the 

 route under which they have been placed, but it is possible that 

 a few may also have reached our shores by another course. 

 In the case of two or three species which arrived along the 

 whole of the south coast, it has been difficult to ascertain 

 whether they came in first from the east or from the west. 

 They have been placed under those routes which a careful 

 examination of the evidence seemed to favour, but have been 

 marked with an asterisk to imply that there was some doubt 

 on that point. 



A. Species arriving solely on the western half of the south 



coast. 

 Ring-Ouzel, Pied Flycatchf^r, Land-Rail. 



B. Species arriving along the whole of the south coast, but 



first <ind chiefly on its western half, 

 Wheatear, Redstart, (Jommon Whitethroat, Garden - 

 Warbler, Chiffchaff, Willow- Warbler, Spotted Fly^ 

 catcher, Swallow, House-Martin, Sand-Martin, Swift. 



C. Species arriving along the whole of the south coast, but 



first and chiefly on its eastern half, 

 Whinchat, Lesser Whitethroat *, Blackcap, Grrass- 

 hopper- Warbler, Wood- Warbler *, Reed- Warbler, Sedge- 

 Warbler *, Nightjar, Cuckoo. 



D. Species arriving along the south-east coast, from Essex 



to Hampshire. 

 Nightingale, White Wagtail, Yellow Wagtail, Tree- 

 Pipit, Red-backed Shrike, Wryneck, Tiirtle-Dove. 



