490 Wisconsin Academy of Sciences, Arts, and Letters. 
Mallard. Anas platyrhyncJios Linn. 
Several found on Lake 16, and numerous others were seen 
nearly every evening flying over Lake 33. These evening flights 
of ducks were always in a northerly direction, with the birds ap¬ 
proximately three hundred feet above the water. Few flocks 
alighted in Lake 33. 
Black Duck. Anas ruhripes Brewster. 
More common even than the preceding. Seen on Lake 16, 
and on the evening flights oter Lake 33. These birds were wild 
in the extreme, a single shot from any. point on the lake being 
sufficient to cause every duck to leave the lake at once. Many of 
the old birds, especially on Lake 16, still had their young with 
them, though well grown. 
Wood Duck. Aix sponsa (Linn.) 
None were seen, though the hunters of the region all reported 
them as not uncommon summer residents. 
American Bittern. Botanrus lentiginosus (Montagu). 
Very conun on in suitable swampy places. These birds were 
found about practically every body of water, irrespective of its 
size, provided only that there was open swamp for them to feed 
in. Not conflned to the cat-tail marshes, which are few in this 
section of the county. The “pumping” of this species was often 
heard. Undoubtedly a breeding species. 
Least Bittern. Ixobryclius exilis (Gmelin). 
Whether these birds are really uncommon, or whether it is 
their seclusive habits that keep them from being seen, is hard to 
say. A single individual was observed at Lake 16, flying low 
over the sphagnum marsh. 
Great Blue Heron. Ardea herodias Jierodias Linn. 
Not common, yet quite a number were seen. Found mostly 
in small groups of two or three, and were very timid. They seem 
to shun the open marsh when the American Bittern is found, 
and to prefer locations where the tangled woods extend nearly' 
