Family FALCONIDAE. 



Astur palumbarius (L.) — Goshawk. 



(Plate 103, fig. a— b). 

 (Snouckaert: Avifauna Neerlandica, p. 65, No. 155). 



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, tinged more or less bluish sea-green; 

 when light shines through the eggshell it 

 shows through dark green. 



57.4X44.8 millimetres. 



6.1 grams. 



coarse-grained. 



mostly about ovoidal ; often bellied. 



consists of vegetable materials (also occupies 

 nests of other species of Birds of Prey). 



in lofty trees, by preference in oaks, beeches 

 or firs. 



2—4, sometimes 5, usually 3. 



April— beginning of June. 



about 3 weeks. 



