Family BUBONIDAE. 



Asio accipitrina (Pallas) — Short-eared Owl. 



(Plate 97, fig. a-c). 

 (Snouckaert: Avifauna Neerlandica, p. 62. No. 147). 



Colour of surface of shell: 



Average dimensions: 

 Average weight of shell 

 Texture of shell: 



Shape : 



Nest: 



Site of nest: 



Number of eggs: 

 Breeding season: 

 Duration of incubation: 



white, mostly slightly cream coloured ; when 

 light falls through them the shell is slightly 

 more yellowish than that of otus, which 

 circumstance is in agreement with the 

 above mentioned shade of colour. 



40 X 30.4 millimetres. 



1.34 gram. 



the pores are less distinct than ono/«s;see 

 further the general review of the Family. 



usually slightly more slender than that of 

 otus. 



the eggs lie either on the bare ground or 

 on a layer of dry pieces of plants. 



on the ground, in damp places between tall 

 grass, or between reeds; between heather 

 and also sometimes in corn fields. 



4—6, sometimes 7—8. 



April— May. 



about 4 weeks. 



