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.