Family FRINGILLIDAE. 



Passer domestica (L.) — House-Sparrow. 



(Plates 18-19, fig. a-j)- 

 (Snouckaert: Avifauna Neerlandica, p. 18, No. 33). 



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: 



Pure white; bluish, sometimes greenish, 

 white; brownish grey. 



violet grey; ash-grey; brown, in various 

 tints: greenish. 



22 X 15.6 millimetres. 



0.207 gram. 



not specially characterized. 



as a rule oblong ovoidal. 



consists of hay, straw, rags, hair, feathers, etc. 



under roofs, in holes in walls, and similar 

 places; as an exception in trees (nest with 

 side-entrance). 



5—7 (after-set: 3—5). 



April— August. 



about 13 days. 



