Arctic Tern Twelve birds of this species were seen in April, all of which were headed north. The birds were either in pairs or alone. On two occasions birds appeared to be flushed from the water by the approaching ship. This species appears to migrate north across the grid area in the spring in small numbers. Pomarine Jaeger Numbers of this species decreased 36% from 22 in March to 11 in April. This decrease was accompanied by a dispersal of the species' range away from the islands to a more random and widespread distribution throughout the grid area. Several birds were seen well over 500 miles from nearest land. Phalarope sp. Of ten shorebirds seen on the April cruise, a 70% decrease from 33 in March, nine were thought to be phalaropes. It has not yet been possible to identify the species involved. The birds have not yet gotten their breeding plumages. All were headed north. On one occasion a phalarope was seen at fairly close range sitting on the water. The individuals seen in the grid area may be young birds somewhat out of their normal range. Rock Dove One bird of this species circled the ship on the last morning of the April cruise while still over ten miles from Oahu.