Family STERNIDAE. 

 Sterna minuta L. - Little Tern. 



(Pinto 179, fig. a-f). 

 (Snouckaert; Avifauna Neerlandica, p. 116, No. 276). 



Colour of surface of shell: 



Colour of spots: 



Average dimensions: 

 Average weight of shell : 

 Texture of shell ; 

 Shape : 

 Nest and its site: 



Number of eggs: 

 Breeding season : 

 Duration of incubation: 



bluish-, greenish- or greyish white; it is 

 frequently almost pure white; yellowish or 

 brownish. 



dark brown, in various shades; underlying 

 spots show through the colour of ashes. 



32 ;■: 23 Miillinietres. 



0.58 gram. 



like that of fluviatilis. 



mostly a regular or a pointed oval. 



in a little hollow on the ground, in places 

 were shells are plentiful. (Breeds in colonies I. 



usually 3. 



end of May to June. 



about 1(3 days. 



