Family FALCONIDAE. 

 Buteo buteo (L.) — Common Buzzard. 



(Plate 105, fig. a-b). 

 (Snouckaert: Avifauna Neerlandica, p. 66. No. 157). 



Colour of surface of shell : 



Colour of spots: 



Number of eggs: 

 Breeding season: 

 Duration of incubation : 



white, tinged more or less seagreen ; when 

 light shines through the eggshell it shows 

 through green. 



loam-brown; red brown; underlying spots 

 show through violet. 



55 X 44 millimetres. 



47 grams. 



rather fine grained; numerous sharp-pointed 

 pores. 



short-oval, bellied. 



consists of vegetable materials. (Old nests of 

 Corvidae are also used as a substructure). 



by preference in oaks and beeches; also in 

 tall firs (Leuvenumsche Bosch, 1899) '). 



2—4, usually 3. 



April— May. 



about 4 weeks. 



') Statement by Dr. C. Kerbert, in the „Ornithologische Jaaroverzicht", by 

 Dr. R. Baron SNOUCKAERT VAN SCHAUBURG, in „De Levende Natuur", 5th annual 

 series, page 98. 



