Family SYLVIIDAE. 



Sylvia atricapilla (L.) J ) — Blackcap. 



(Plate 53, fig. a-d). 

 (Snouckaert: Avifauna Neerlandica, p. 39, No. 92). 



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: 



greyish-, yellowish-, brownish- or reddish- 

 white; sometimes faintly bluish-white, 

 all in different, more or less pure shades. 



brown, in various variegations ; when lying 

 deeper they appear to be of a violet grey 

 colour. 



19.3 X 14.6 millimetres. 



0.14 gram. 



not specially characterized. 



oblong or short ovoidal. 



consists of vegetable materials, lined with 

 horsehair. 



by preference in shrubs and hedges. 



5-6. 



May— July. 



about 13 days. 



] ) See also for this species the general remarks respecting the Family. 



