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ett AUS BON we beUslai ie TULIN 
FIGURE 8 
Figure 8. This is a portion of the hole below Lock and Dam 12. To the background 
and right is Iowa. Note the hills which are comparable to the nearby Palisades on 
the Illinois side. We saw very few eagles in this area. Usually none was present. 
The water was deep and very little food was available as compared to the other 
open areas. 
FIGURESS 
Figure 9. We set up a cannon net at one of our trapping sites on Crooked Slough. 
The net in the center of the picture was 75 feet long and 30 feet wide. It was fired 
over the bait (fish) to the left by means of three powder charges. The mounted eagle 
to the right was used for a short time as a decoy. During the winter the eagles con- 
sumed several hundred pounds of fish (primarily carp and buffalo) we placed on 
the ice. The dead trees at the upper left were commonly used as perching sites. 
Sometimes the eagles walked 30 or 40 feet on the ice. This was usually done 
in the vicinity of bait we placed on the ice or where the commercial fishermen dis- 
carded fish. Sometimes, however, birds landed on the ice and walked to the edge 
of an open area. 
