Biel Arvey Journal Ft. Baker, beneath Golden Gate Bridge Marin Co., Calif. (2) Nov.11,1966 Very slow; not much activity at all out here. Maybe the good number of birds that are left on the rocks over here are indicative of [illegible] the way tings are going in general for the cormorants now. It's low tide and they're not feeding. There are more cormorants on the rock now than at any time that I've been here. I was just watching 2 pairs of Pelagic Cormorants up on the rock; they're going through some courtship or some mutual display which I can't quite figure out. There's a sort of a bowing with the head; one member of one pair would do sort of a choke display. He would bow the head, raise the tail, and extend the neck, and open his mouth. What this means at this time of year I'm not sure. I don't know if it could be partly a sexual display or a strengthening the pair bond display. These 4 birds seems to be very close together, very intimately joined up here on the rock at least, so maybe it's just a manifestation of pair bond activity during the off season, or it could just be a low intensity sexual display. I haven't seen Pelagic displays before, but watching this the movements seem to be very much the same as Brandts Cormorants. For instance, the pulling of the neck and head back onto its back and thrusting forward seems to be a similar type of movement