SI-MNH-955a Rev. 4-9-64 SMITHSONIAN INSTITUTION DIVISION OF BIRDS AT SEA DAILY OBSERVATIONS SUMMARY DATE: 17 Apr 65 Total Minutes: 757 Total Miles 127 I. Total Abundance of birds: No. Sightings No. Birds Birds/Sighting Birds/Mile 83 690 8.31 5.43 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 T WT P B 64 141 14 196 64 1 16 3.06 4.57 1 1.14 1.54 1.50 1.01 1.13 III. Abundance of Tropicbirds: No. Sightings No. Birds Birds/Sighting Birds/Mile T RT WT T RT WT T RT WT T RT WT 2 1 1 3 2 1 1.5 2.0 1.0 .02 .02 .01 IV. Abundance of Terns: No. Sightings No. Birds Birds/Sighting Birds/Mile 22 486 22.09 3.83 V. Abundance of Shorebirds: No. Sightings No. Birds Birds/Sighting Birds/Mile 1 1 1.0 .01 VI. Abundance of Boobys: No. Sightings No. Birds Birds/Sighting Birds/Mile T BF RF B T BF RF B T BF RF B T BF RF B 0 0 0 0 VII. Abundance of Frigatebirds: No. Sightings No. Birds Birds/Sighting Birds/Mile 3 4 1.33 .03 VIII. Abundance of Flocks: Total No. Total No. Total No. No. Feeding No. Feeding No. Feeding Flocks Birds F/Mi. Flocks Birds F/MI. 10 591 .08 7 548 .06