Catharacta maccormicki Dec. 5 away + forcing bits over its shoulders. Sometimes I could see what it was, white flecks of something, sometime not. It seemed to take an instant to locate an object by some conditions. It did this for a minute, (favoring its right side), stretched, and then sat down again on the eggs. Unbanded stood nearby peering; did nothing. 2:30 has been here since my arrival. One or nest with mate sitting 12 feet from the nest. 2:04: L is situated 15 feet NW of nest. This has been his station all along. 11:02 Two slams swooped to within 10 feet of p. 204, neither made a move. 11:10 Witnessed a nest relief ceremony in p. located between I + J. When first noticed the darker member of pair was standing facing away from nest & was forcing objects over its shoulder. Light member was in choble posture when just seen + then sat on the nest in exaggerated fashion, squirmed from side to side. Dark kept up the forcing for 3 minutes or more, slowly moving until he was 3-4 feet away. It favored its right side. Light got up once, turned about 60° and sat + wriggled again. Light repeated this a minute or 2 after dark stopped forcing.