SI-MNH-955a Rev. 4-9-64 SMITHSONIAN INSTITUTION DIVISION OF BIRDS AT SEA DAILY OBSERVATIONS SUMMARY DATE: 20 Apr 65 Total Minutes: 758 Total Miles 104 I. Total Abundance of birds: No. Sightings No. Birds Birds/Sighting Birds/Mile 37 75 2.03 .72 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 29 2 2 5 36 4 2 6 1.24 .2 1 1.2 .35 .04 .02 .06 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 0 0 2 0 0 1 0 0 .02 0 0 IV. Abundance of Terns: No. Sightings No. Birds Birds/Sighting Birds/Mile 5 34 6.8 .33 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 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. 2 36 .02 1 31 .01