254 
ANAS FORMOSA 
It is interesting to note that captive males come into eclipse later than most other 
ducks. In my pond on July 12, Widgeon, Mallard, Red-heads and Carolina Ducks 
were far advanced toward perfect eclipse, but three Formosan males had apparently 
not shed a single feather. 
Hybrids. One hybrid has been recorded (Anas formosa x Anas penelope) and 
it is not certain whether this was wild-killed or artificially reared (Van Kempen, 
1890). I saw in the Tring Museum the product of a cross between this and the 
Common Teal bred at Regents Park, London. 
