Order ANSERES. Lamellirostral Swimmers. 
Swimming birds of wide distribution, mostly on fresh waters. 
The feeding habits vary greatly; some species being vegetarian, 
while others eat animal food or combine it with vegetation in some 
form. Most of the species are edible, and being of medium or 
large size furnish an important amount of human food. The order 
is a large one containing numerous genera, mostly belonging to 
one family. 
Family ANATIDA. Ducks, Geese and Swans. 
47. AMERICAN MERGANSER. Mergus americanus. 
48. RED-BREASTED MERGANSER. Mergus serrator. 
49. HOODED MERGANSER. Lophodytes cucullatus. 
The Mergansers are rare winter visitors, and are mostly found 
on salt waters. They are fish eaters and are not edible. 
50. MALLARD. Anas platyrhynchos. 
Common winter residents, principal!y on fresh waters. Oc- 
casional summer residents, breeding about lakes and in marshes. 
51. Chaulelasmas streperus. 
Rather common winter residents on fresh waters. More plen- 
tiful in the migrations. 
52. BALDPLATE. WIDGEON. Mareca americana. 
Common winter residents, principally on fresh waters. 
538. GREEN-WINGED TEAL. Nettion carolinense. 
Common winter residents, principally on fresh waters. 
54. BLUE-WINGED TEAL. Querquedula discors. 
Rare winter visitants. 
55. CINNAMON TEAL. Querquedula cyanoptera. 
Common spring migrants. A few remain through the summer 
and breed about lakes and in marshes. Found only on fresh 
waters. 
56. SHOVELER. SPOONBILL DUCK. Spatula clypeata. 
Abundant winter resident, principally on fresh waters. 
57. PINTAIL. SPRIGTAIL. Dafila acuta. 
Abundant winter residents, principally on fresh waters. 
58. WOOD DUCK. Aix sponsa. 
Rare winter visitant. ‘Two specimens taken in this county are 
in museums. 
59. Marila americana. 
Common winter residents, principally on fresh waters. 
60. CANVASBACK. Marila valisneria. 
Rather common winter residents along the seacoast. Rare in 
the interior. Redhead Ducks are often mistaken for Canvasbacks 
61. SCAUP DUCK. BLUE-BILL. Marila marila. 
Rare winter visitants along the seacoast. 
62. LESSER SCAUP DUCK. BLUE-BILL. Marila affinis. 
Common winter residents on salt and fresh waters. 
63. RING-NECKED DUCK. Marila collaris. 
Occasional winter visitant. 
