New plumage W/brood patch 4 New plumage W/no brood patch 20 Old plumage W/no brood patch 30 Molting 4 Unknown 3 61 Obviously most of these birds were not breeding. While these birds were being banded a great amount of variance was noted in the distribution of black about the face and eye. Also there was variation in the coloration of the back, but this is attributed to the new plumage being darker. However, the variance in the face pattern was photo- graphed for later comparison with skins. It is possible that this variance is normal, but may indicate mixing of populations of the two subspecies that are present in this area. Accipiter sp. On 2 May as we were concluding the Fur Seal survey along the east cost, a large accipiterine hawk was seen soaring over the cliffs several hundred feet above. The light was from the west so the bird presented only a silhouette. The size of the bird suggests that it may have been a Cooper Hawk, but the nature of the sighting does not constitute a record. Tringa sp. During the Fur Seal survey along the east coast of Guadalupe Island a "small" shorebird was flushed. At the time I noted the bent-winged flight of the bird and size. Again, the nature of this sighting would not constitute a record. Wandering Tattler Heteroscelus incanum This shorebird was found in low density during the work on Guadalupe. They are found singly along stretches of rocky coastline. Dr. Hubbs states that they have been present on all visits at all seasons of the year. Burrowing Owl Speotyto cunicularia The sighting of this bird is discussed under the account of Oceanodroma leucorhoa which is presently its prey species. White-throated Swift Aeronautes saxatalis One bird was seen on Islote Negro on 27 April. Anna Hummingbird Calypte anna This bird reportedly came with the recent introduction of the wild tobacco. This seems to be its primary food source. There is however an endemic tobacco on the island.