Family SYLVIIDAE. 



Sylvia curruca (L.) Lesser Whitethroat. 



(Plate 52, fig. a-c). 

 (Snouckaert: Avifauna Neerlandica, p. 39, No. 91). 



Colour of surface of shell 



Colour of spots: 



Average dimensions : 

 Average weight of shell: 

 Texture of shell: 

 Shape: 



Nest: 



Site of nest: 



Number of eggs: 

 Breeding season: 

 Duration of incubation: 

 Remark: 



creamy white; slightly greenish, sometimes 

 brownish. 



greyish brown; brownish yellow; when lying 



deeper they appear to be of a violet grey 



colour. 

 The larger or smaller spots of irregular shape 



are accompanied by a few large blotches 



with blurred edges. 



16.5 X 12.5 millimetres. 



0.085 gram. 



bears no special characteristic. 



mostly short-compressed; frequently also 

 rotund. 



consists of vegetable materials, lined with 

 hair. 



mostly not far from the ground in various 

 shrubs, especially in thorn bushes and 

 hedges. 



5—6, sometimes 4. 



May— June. 



about 13 days. 



Curruca-eggs resemble one of the simplex- 

 types most, but are considerably smaller. 



