Gilbert, August 1964
Page 4
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Transcription
Red-footed Booby Red-feet were observed to feed almost exactly like Browns. They both sat on the water and dabbled and also flew over the water until a fish or other food was spotted and then dove almost vertically into the water. Feeding Flock Structure In the flocks observed, each species seemed to consistently occupy the same position within the flock. Frigatebirds for example stayed above the main feeding flock -- often 200 yards above the flock. In one flock frigates were observed to come down to the level of the other species. Sooty and Fairy Terns stayed above the flock but were constantly diving down to the water and coming back up above the other birds. Common, Hawaiian and Blue-gray Noddies stayed just above the water surface following the fish school very closely. Wedge-tailed and Newell's Shearwaters were observed to follow the action of the terns but also flew around the area, neither staying up with the terns nor the fish school. Both species of booby flew all over the area; some- times flying up with the Sooty and Fairy Terns; other times flying lower with the various Noddies.