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IOWA ACADEMY OF SCIENCE Vol. XXIV, 1917 
passed. During the summer of 1904 about a dozen remained 
in a little swamp near Sioux Rapids. They joined the black 
terns in a -demonstration against me when I invaded the swamps 
but no nests of this species were found. 
5. * Hydrochelidon nigra surinamensis. Black Tern. A com- 
mon breeding species. They often followed the plow after the 
manner of Franklin Gulls and occasionally mingled with that 
species at such times. 
6. M erg us americanus. Mer ganser . A male was shot on one 
of the ponds near Webb during the last week in March, 1910. 
I examined the skin later. Flocks of Mergansers (probably 
this species) were noted several times but could not be identified 
with certainty. 
7. Lophodytes cucullatus. Hooded Merganser. This species 
was a common migrant and possibly a breeding bird as from 
three to five were often noted about a chain of small ponds dur- 
ing June and July, 1910. 
8. *Anas platyrhynchos. Mallard. An abundant migrant, 
being probably the most common duck of the region. It nested 
occasionally. 
9. Chaulelasmns streperus. Gad wall. This duck was not 
common in my experience. One female collected in March, 1908, 
is the only definite record that I have. 
10. Nettion carolinense. Green-winged Teal. Although these 
ducks were shot during the spring migration every year they 
never appeared in any numbers. 
11. *Querquedula discors. Blue-winged Teal. One of the 
most abundant ducks of the region during migrations and the 
only species which nested regularly. 
12. Spatula clypeata. Shoveller. A regular migrant. 
13. Dafila acuta. Pintail. As a spring migrant this duck 
equalled the mallard in abundance but was not noted in the 
fall. It was often killed in large numbers and I once saw 125 
of the species which had been killed by two gunners in one day’s 
shooting on a small lake in Clay county. 
14. Aix sponsa. Wood Duck. This duck is reported to have 
nested along the Little Sioux in past years. I shot one bird out 
of a flock of five in the fall of 1905 (exact date missing) in 
southern Clay. 
