SI-MNH-955a Rev. 4-9-64 SMITHSONIAN INSTITUTION DIVISION OF BIRDS AT SEA DAILY OBSERVATIONS SUMMARY DATE: 21 Apr 65 Total Minutes: 752 Total Miles 125 I. Total Abundance of birds: No. Sightings No. Birds Birds/Sighting Birds/Mile 40 67 1.68 54 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 27 6 1 1 37 10 1 1 1.37 1.67 1 1 30 .08 .01 .01 III. Abundance of Tropicbirds: No. Sightings No. Birds Birds/Sighting Birds/Mile T RT WT T RT WT T RT WT T RT WT 0 0 0 0 IV. Abundance of Terns: No. Sightings No. Birds Birds/Sighting Birds/Mile 13 29 2.23 .23 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 T BF RF B 0 0 0 0 VII. Abundance of Frigatebirds: No. Sightings No. Birds Birds/Sighting Birds/Mile 0 0 0 0 VIII. Abundance of Flocks: Total No. Total No. Total No. No. Feeding No. Feeding No. Feeding Flocks Birds F/Mi. Flocks Birds F/MI. 1 17 .01 1 17 .01