THE BIRDS OF WISCONSIN. 
19 
Nettion carolinensis (Qmel.J. GREEN-WINGED TEAL.. 
An abundant migrant in the spring and fall. As with other 
ducks, the dates of migration depend entirely on the weather 
and breaking up or forming of the ice. Of an average season 
the green-wing arrives early in April, although March records 
are not infrequent, and large numbers may be found close on 
to May 1. In fall the majority do not arrive on their south- 
ward journey until from the 15th to 30th of September or 
well into October, and remain in localities where food is plenty 
until very cold weather. Formerly bred sparingly even in 
southern Wisconsin, eggs having been taken on Black Hawk 
Island, Lake Koshkonong, by L. K. in May 1870. At least 
two other authentic nesting records at this place are known. 
Farther north they breed more plentifully, but the larger 
number pass beyond our borders for the summer. 
Querauedula discors (Linn.). BLUE-WINGED TEAL,. 
Formerly one of the most abundant of our ducks, but of 
late years it has greatly diminished in numbers, perhaps more 
than any other species, although it is at times still 
plentiful during late spring and early fall migrations. Arrives 
much later than the green-wing, and leaves again much 
earlier in the autumn. Used to nest abundantly in all suitable 
localities in southern Wisconsin. Thirty years ago a blue- 
winged teal's nest was such a common affair that we seldom 
stopped even to find the nest when we flushed the duck. 
Along every grassy stream or ditch, and in all marshes and 
meadows and even, at times, in grain fields at considerable 
distances from water, it nested in abundance. A few still 
summer with us and breed, but it is a mere fraction of what 
tnere used to be. Naturally the most unsuspicious of all our 
ducks, in localities where it was not disturbed it became so 
tame as to allow a person to approach within a few feet, 
especially during the spring months. 
Uueiqiiedula cyanoptera (YieUl.). CINNAMON TEAL. 
A single specimen of this species was taken by a hunter 
on Lake Koshkonong, October 18, 1870, and mounted by 
Thure Kumlien. An immature plumaged male was seen by 
L. K. in a hunter's string of ducks at Lake Koshkonong, 
October 9, 1891. The owner flatly refused to part with this 
bird for any consideration after he found it was not the 
common teal, although he had not noticed any difference 
before. Th ere is no doubt but that this species occurs occasion- 
