Family FRINGILLIDAE. 



Fringilla coelebs L. — Chaffinch. 



(Plate 14, fig. a-d). 

 (Snouckaert: Avifauna Neerlandica, p. 17, No. 30). 



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: 



light blue; greyish blue; greyish red; reddish 

 brown. The coelebs-egg presents a great 

 variety both in colour of the surface of 

 the shell and in markings. Some eggs 

 show much resemblance with eggs of 

 chloris and pyrrhula. 



blackish brown; those eggs with bluish 

 surface of shell often have fairly large 

 spots lying deeper and of a violet grey 

 appearance. Blotches with blurred edges, 

 i. e. : surrounded by a lighter shade of 

 their own colour (penumbra), are charact- 

 eristic for the type with reddish or brown- 

 ish coloured surface of shell. 



19.3 X 14.6 millimetres. 



0.114 gram. 



bears no special characteristic. 



varying. 



consists of vegetable material, lined with 

 wool, feathers, horse-hair. etc. 



in trees, mostly far from the trunk. 



5—6 (after-set: 3—4). 



end of April — June. 



about 14 days- 



