of subjects on the island. After this I killed an adult Sooty Tern which had a broken wing and went over it for ectoparasites. I found a large infestation of chiggers in the nasal cavity. These I photographed with black and white using my bellows. After dark Ken used the last 100 # 3 bands on immatures Sooty Terns. I again waded over to the islet and banded Frigates. Not as many were present as before. I was, however, able to band 19 on the island before stopping. I also banded one immature Red-footed Booby and Brown Booby. After Ken finished the Sooty terns, we banded 100 Wedge-tailed Shearwater. Before turning in I checked the marked Shear- water burrows and recorded the activity. A note on the Christmas I. Shearwaters: Both adults are with the chicks at night. Ken has seen the adults come in during the day, undoubtedly to feed the nestling as they leave again quickly. July 19, 1963 Processed Berlese Funnel sample of the Xmas I. Shearwater. Re- placed it with a sand sample from the North beach (near water's edge) to see if anything is present. Looked over adult Sooty Tern for ectoparasites. Nothing on the top of the head. Nasal cavity again full of chiggers which are attached. An entire side of the nasal cavity was preserved in alcohol to show their attachment. Several bands from death immature Sooty Terns were recovered. These birds were run over or died from broken wings. Ken observed the Frigates both during the morning and after- oon and also recorded nesting data from the Red-footed and Brown Boobies.