Field notes, v667
Page 313
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Transcription
ANAOH ISLAND TRIP, July 3, 1950 continued. the only fish being chubs. Apparently feeding habits vary considerably during the season and may vary [illegible] through the day. It is felt our presence caused the death of [illegible] smaller young through excessive exposure to the sun, as the adults were quick to take flight and abandon their young as we approached a colony. Several naked young had been injured in the back, as blood was running from this location. Possibly this injury was caused by California gulls. Pierced eggs found on May 15 also indicated gull predation. It was difficult to get an accurate estimated on the number of pods, as pods would break up into several [illegible] when approached. Therefore some pods counted as two many only be young. Some colonies were so close together that they could be considered one. 50 young pelicans were banded. Double-crested Cormorant - 1200 adults were counted at nesting colonies and elsewhere on the island. Five nesting colonies were found containing 1650 young and 17 eggs. Nesting was at all stages. Some young left the colonies and took to the water. Colonies were situated on tuffa along the water's edge shore distances apart. Nest material was alkali weed. The number of eggs or young to each colony were as follows: As estimated: Colony 1. 400 young and 9 eggs 2. 225 young and 8 eggs 3. 250 young 4. 600 young 5. 175 young 1650 young and 17 eggs. 25 young cormorants were banded. Blue Heron - On May 15 Giles and Nygren found 10 blue heron nests containing young. This trip 27 adults and/or young were observed away from the colony.[illegible] A nest with 4 young and another with 3 eggs was also found. Canada Goose - Fed counted a total of 327. All in the water around the island. The young were too far along to tell from adults. Mallard - Brood with 6 Class III young was seen. Also 12 mallards in two flocks of 6 each were seen. Sgadwall - 4 were seen with a flock of 6 pintail flying over the water along the edge of the island. Pintail - one lone female on island's edge seen. A pair in the water and the flock of 6 mentioned above. American Merganser - We chassed about 25 of them with the boat. They did not fly but flopped along in the water ahead of us.