Family SYLVIIDAE. 



Calamodus schoenobaenus (L.) — Sedge-Warbler. 



(Plate 60, fig. a-f). 

 (Snouckaert: Avifauna Neerlandica, p. 41, No. 95). 



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: 

 Remarks : 



dull greenish yellow; yellowish or brownish. 



brownish grey; brown. The marking, which 

 is of a cloudy nature, covers the ground 

 colour completely. 



18 X 13.6 millimetres. 



0.102 gram. 



not specially characterized. 



ovoidal. 



is built of vegetable materials, lined with 

 hair, feathers and down (of plants). 



in willow or alder bushes in the midst of 

 dense marsh vegetation. 



5—6 (mostly 6). 



June-July. 



about 13 days. 



Among schocnobaenus-eggs many are found 

 which show a great resemblance to those 

 of Motacilla flava; the different sites of 

 the nests of the two species, however, 

 always form a good distinguishing feature. 



