Family LANIIDAE. 



Lanius excubitor L. — Great Grey Shrike. 



(Plate 8, fig. a-d). 

 (Snouckaert: Avifauna Neerlandica, p. 33, No. 76). 



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: 



dull white (only perfectly fresh objects show 

 a light green tint), which soon becomes 

 slightly yellow. 



yellowish or greyish brown; when lying 

 deeper they are of a grey appearance. 



26.7 X 19.3 millimetres. 



0.302 gram. 



rather coarse. 



mostly short-oval ; when cut transversely 

 unequal halves are produced. 



consists of vegetable material, lined with 

 hair and feathers. 



in tall trees or large thornbushes, usually 

 far from the trunk. 



5—7. 



middle of April— May. 



about 15 days. 



