K. Amerman 1964 Mobulua Island believe there may be 7000 pairs using the island. The Shauwaters were very vocal all the while we were there. The main body apparently arrived after dark, as there were very few on the ground prior to this. Most of the burrows were in the soft reddish soil on the center of the landward side. Most of these were in short grass, though many were in a mixture of higher grass and hantana and some were in sand near the shore on the side between the two islands. Most of the burrows were quite short, only about 1-1/2' deep so that a single bird just fit in. Some were wide enough to accommodate both members of the pair; though many had very small We did not visit the other island of the pair. Coming back in the raft we noted Shauwaters flying about us more than 1/3 of the way back to shore.