Maher 1960 Catherata maccormicki 37 left Y-B. Left Y-3l began eating snow + act. O the got up overalled up. Left y-o no sign of Territory defense. Muffled call in descending pitch m'm m'm m'm, accent on first like saying m but keepint mouth closed. Then food begging call. (Note: we now.) Saw this pair copulated & kept uttering a similar sounding copulation call. He might have made that done while female was laying. Be gave "churn" or "chortle" if you will of satisfaction each time he made contact. Left 5:20 P.M. Nov.19 Ten sleeve at a small melt pool on sea ice S. of shuang. The birds were bathing, preening and resting. After lunch threw a snow petrel carcass out the door, in 10 seconds a bird landed & began eating. He was then chased off by a second who supplanted him. The first bird then circled about + flown at the second bird striking it so It came over the repeated 5026 times Posture of second bird interesting as bird A approached it crouched, erected its tail raised scapulars & kept head down like 20. [illegible] Bird (never noticed) side front (the tail being erected)