198 STUDIES IN BIRD-MIGRATION 



dates on which they are performed) are : the Ring- 

 Ouzel, Wheatear, Whinchat, Redstart, Common and 

 Lesser Whitethroats, Blackcap, Garden- Warbler, Chiff- 

 chaff, Willow - Warbler, Sedge - Warbler, Tree - Pipit, 

 Red - backed Shrike, Pied and Spotted Flycatchers, 

 House- and Sand- Martins, Swift, Nightjar, Wryneck, 

 Cuckoo, Corn-Crake, Common Sandpiper, Whimbrel, 

 etc. The Wheatear and the Whimbrel proceed to 

 Iceland and the Faroes, as well as to North- Western 

 Europe. 



