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 Genus  CHAULIODES. 
 G e n .  C har.  Bill as  sh o rt as th e   head,  depressed  th ro u g h o u t its  len g th ,  as  b ro ad   as hig h   a t  
 th e   base,  ra th e r   n a rrow in g   towards  th e   tip ,  wh ich   has  a   small  dertrvm  o r   nail-,  bo th   
 mandibles  laminated,  th e  laminae  o f  th e   u p p e r  one  pro jectin g  b ey o n d  th e  margins o f   th e   
 bill.  Nostrils  lateral,  n e a r  th e   base  o f  th e   b ill,  oval  an d   pervious.  Wings  lo n g   and  
 acuminate.  Tail wedge-shaped.  Feet w ith   fo u r  toes, th re e   before  and  one  b e h in d ;  the  
 h in d   toe  small  and  free. 
 G A DWA L L . 
 Anas streperà,  Linn. 
 Chauliodes streperà,  Swains. 
 Le Canard chipeau. 
 T hough  the  colours of this elegant Duck are more sober than those of most of  the family,  it  yields to none  
 in  the  tasteful  disposition  of its  markings,  and  to  few  in  the  excellence  of  its  flesh  for  the  table.  The  
 European species to which it is  nearest allied is the Common Widgeon  (Anas Penelope), and we can scarcely  
 see the necessity  of creating a new genus  for its reception from  which  the Widgeon is  excluded :  we have,  
 however,  given Mr.  Swainson’s  generic characters, leaving it to  the option of our readers whether  to accept  
 or reject them. 
 Although  the Gadwall does  not  visit  us  in  great  numbers, it  is tolerably common  during the  months  of  
 spring.  The low marshes and fenny districts,  Holland, and the whole of the northern portions of Europe, are  
 the  situations  in  which  it most  abounds.  In  its  habits  and manners it closely resembles  the Widgeon, with  
 which  it is  often  seen associated.  We have  received  specimens from  the  Himalayan mountains  which  are  
 identical with our European species. 
 The deficiency of brilliant colours in  the male renders him but little more ornamented in  his plumage than  
 the  female,  the external  difference  between  them  being  less  than  is  usually met  with ;  but the  bird of  the  
 first year presents a considerable difference,  as our Plate  illustrates. 
 Like the  common Wild Duck,  this  bird breeds in  reed beds and  similar places, laying eight  or nine eggs,  
 of a pale green.  - 
 The adult male has the head  and the upper part of  the neck dull brown,  thickly marked with dirty white ;  
 the  back, scapulars and  sides  ornamented  with  narrow  zigzag  lines  of black  and white ;  the middle  wing-  
 coverts  chestnut,  with  a dash of  brown in  the centre ;  the  rump and  under tail-coverts  blueish  black ;  the  
 shoulders  chestnut,  succeeded  by blueish  black, and  a white  speculum ;  the feathers of  the chest  scale-like,  
 having  a  dusky  black  centre,  with  crescent-shaped  edges ;  the  abdomen  white ;  the  beak  black,  and  the  
 tarsi orange. 
 The young bird of the year is of a uniform rusty brown above, each feather having a central mark of dusky  
 black,  the  under surface being white. 
 We have figured  an adult male,  and a bird of the first year,  three fourths  of the natural size.