3. Results
During 90 days of the three winters, we obtained a total of 200
effective video footages, which contained 1,086 minutes of 17,995
foraging activities (Table 3). Among these valid for-aging bouts, 84
were in shallow waters habitats and 116 were in deep waters. Of these
foraging bouts, we observed 98 successful fishing events. A total of 163
fish were caught as there were occasions that a bird captured more than
one in a single foraging bout.