SI-MNH-955a Rev. 4-9-64 SMITHSONIAN INSTITUTION DIVISION OF BIRDS AT SEA DAILY OBSERVATIONS SUMMARY DATE: 11 Apr 65 Total Minutes: 590 Total Miles 114 I. Total Abundance of birds: No. Sightings No. Birds Birds/Sighting Birds/Mile 166 603 3.63 5.29 II. Abundance of the Shearwater-Petrel-Albatross Group: No. Sightings No. Birds Birds/Sighting Birds/Mile T WT P B T WT P B T WT P B 113 41 0 2 20495 0 2 1.81 2.32 0 .10 1.79 .83 0 .02 III. Abundance of Tropicbirds: No. Sightings No. Birds Birds/Sighting Birds/Mile T RT WT T RT WT T RT WT 3 0 3 3 0 3 1.0 0 1.0 .03 0 .03 IV. Abundance of Terns: No. Sightings No. Birds Birds/Sighting Birds/Mile 40 346 8.65 3.03 V. Abundance of Shorebirds: No. Sightings No. Birds Birds/Sighting Birds/Mile 0 0 0 0 VI. Abundance of Boobys: No. Sightings No. Birds Birds/Sighting Birds/Mile T BF RF B T BF RF B T BF RF B 11 0 11 0 15 0 15 0 .136 0 .136 0 .13 0 .13 0 VII. Abundance of Frigatebirds: No. Sightings No. Birds Birds/Sighting Birds/Mile 1 1 1.0 .01 VIII. Abundance of Flocks: Total No. Total No. Total No. No. Feeding No. Feeding No. Feeding Flocks Birds F/Mi. Flocks Birds F/MI. 13 376 .11 6 337 .05