Family SYLVIIDAE. 

 Acrocephalus strepera (Vieillot). 



Reed-Warbler. 



(Plate 62, fig. a-c). 

 (Snouckaert: Avifauna Neerlandica, p. 41, No. 97). 



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: 



greyish white; greenish. 



grey brown; greenish brown. 



18.2 X 13.6 millimetres. 



0.09 gram. 



not specially characterized. 



usually short-oval or rotund. 



is built of vegetable materials, chiefly of 

 stems and blades of graminaceous plants, 

 and lined with the softer parts of such 

 plants and sometimes also with horsehair. 



above or close to water between stems of 

 reeds to a height of about 1 Metre; some- 

 times also in willow and other bushes to 

 a height of 2 Metres from the ground. 



4-5. 



June— July. 



about 13 days. 



x ) See also for this species the general remarks respecting the Family. 



