Field notes, v504
Page 412
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Bill Amey Journal Pt. Baker, beneath Golden Gate Bridge Marin Co., Calif.; Bolinas Bay also (6) Nov. 11, 1946 here; I was watching one that looks like he's ready to take off, or wants to take off but now is preening again. That's the only pair that I can see definitely are Pelagics. 8:30: another 5 min. observation: In--2; Out--3. The 3 going out are heading way across the whole channel to a disturbance way over on the other side at least a mile away where you can see 20 or 30 gulls circling around and some commotion on the water itself, possibly a school of fish. This is a good commentary on cormorant eyesight--they saw this clear over from this side of the rock; they left from very close to the rock and have been travelling straight across. Noo whether they got up and started to go just straight out and saw this disturbance, I don't know or whether they saw it and then took off, I can't be sure. I'll leave now at 8:35 and drive over to Bolinas. 9:30 at Bolinas Bay on the east side maybe a 1/4 of the way down; I don't know exactly where I am, but I'm opposite some pilings of an old pier that extend out into the water about 50 yds. On 2 of the pilings where the pier reached an end are 2 cormorants and a Herring Gull. The cormorants are Double Crests; the 2 off the post appear to be adults. There's also one swimming around in the water that looks possibly to be a 2nd or 3rd yr. It has alot more light under- neath. Now one of the Double Crests is holding his wings out on the piling. One observation I've made already is that the shape of the head is different. It seems to be flatter and also the bill tends to hook more strongly at the end, the upper mandible tends to hook strongly downward. The yellow throat patch is very obvious, can be seen from the side, the base of the upper mandible has some of this orange color on it. I see some pelicans out there and various other birds in the bay. About 300 yds. out in the bay I can see --here's a Double Crest right next to the car, just dove--3 White-winged Scoters and 5 Red-breasted Mergansers. I can see another cormorant quite a ways out on another piling. The bird that dove next to the car is a Common Loon, just losing its