Family ANATIDAE. 



Fuljgula fuligula (L.) Tufted Duck. 



(Plate 188, fig. a-b). 

 (Snoiickaert: Avifauna Neerlniidica, p. 129, N'. 308). ') 



Colour of surface of shell: 



Average dimensions: 

 Average weight of shell : 

 Texture of shell: 



Shape: 



Nest: 



Down: 



Small feathers: 



Site of nest: 



Number of eggs: 

 Breeding season : 

 Duration of incubation : 



yellowish drab, with a faint reddish tinge, 

 or greyish green ; the reddish tinge is often 

 clearly noticeable particularly at the pointed 

 end. (See the remarks respecting this species 

 in the general review of the Family). 



59 X 41 millimetres. 



4.5 grams. 



slightly less fine and smooth than in the 

 case of A. fcrina. 



usually elongated oval. 



consists of vegetable materials, lined with 

 down. 



greyish black, with a but slightly pronounced 

 lighter centrum. 



white with greyish centrum or broadly brown 

 topped. 



in dense bog vegetation among reeds, hedges, 

 etc.'-); among the grass on ridges.^) 



8—12 (sometimes more). 



end of May, June, beginning of July. 



about 25 days. 



') See also the communication about this species by Dr. E. D. VAN OORT 

 in: Jaarboekje der Ned Ornithol. Ver. No. 8, pp. 27,28. 



'-) See: de Zomervogels van de Meer te Vlijmen (N. Brabant), by A. B. 

 WiOMAN, in: Jaarboekje der Ned. Ornithol. Ver. No. 7, pp. 84 and 87. 



■') On June 2nd, 1909, Mr. L. DE Vries found near Nederhorst den Berg 

 (North Holland) a nest with 3 eggs in an advanced state of incubation, lying 

 on a ridge or little dike, at a distance of about one Metre on one side, and 

 of about two Metres on the other side, from the water. (See: Ornithologie 

 van Nederland, by Baron R. Snouckaert van Schauburo, in: Jaarboekje 

 der Ned. Ornithol. Ver. No. 7, p. 55). 



