SI-MNH-955a Rev. 4-9-64 SMITHSONIAN INSTITUTION DIVISION OF BIRDS AT SEA DAILY OBSERVATIONS SUMMARY DATE: April 6, 1964 Total Minutes: 620 Total Miles I. Total Abundance of birds: No. Sightings No. Birds Birds/Sighting Birds/Mile 30 47 1.56 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 21 4 1 31 5 1 1.47 1.25 1 III. Abundance of Tropicbirds: No. Sightings No. Birds Birds/Sighting Birds/Mile T RT WT T RT WT T RT WT 1 1 1 1 1 1 IV. Abundance of Terns: No. Sightings No. Birds Birds/Sighting Birds/Mile 3 8 2.66 V. Abundance of Shorebirds: No. Sightings No. Birds Birds/Sighting Birds/Mile 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 1 1 1 1 1 1 VII. Abundance of Frigatebirds: No. Sightings No. Birds Birds/Sighting Birds/Mile 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. 0