Field notes, v1466
Page 79
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
yons 1940 Frigate Bird March 10 - 9:30 AM observation by Bill Pierce while taking a balloon run. Frigate swooped at balloon at 500 ft, continued to dive at balloon till min 3000 ft, then clearly visible to naked eye - often seen much higher. Would break dive by flapping just before hit, made balloon bobble, quickly rise clear balloon by merely turning into turn no flapping - rate of balloon rise apt 750 ft per min. April 2 - Nesting nearly all over Wake in sheltered places, eggs to mostly eggs and very young hatchlings. some adults couple with complete hard plumage. 9 males with balloon out. Aug 18 - up to this date nothing out of the ordinary observed. About same number about. In late afternoon and evening a few glide along the windward shore of Wake Peale toward Wake, don't bother the Boobies then. On Aug. 18, saw many frigate on N leg of Wake more Ad male than female could not get within 50 feet of them if seen, but sometimes they did not wake up. Noticed a few ticks flies on some. Quite a few immature birds but almost all of them could fly. At least 500 adults on N leg of Wake Note: Ted Rutger, radio operator, tells of Frigates playing along the sides of well developed cumulus clouds, shooting up or down with the air currents.