Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
166
Journal
R.E. Johnson
1968
July 12 Amchitka Island, Alaska
out flat & looked dead when we 1st passed low
over the nest, was later upright & hiding in the
tall grass (but still visible) when we circled over for
a second look! Perhaps some birds respond to
this odd noisy whirly bird by playing dead(?).
Eagle Nests: In all 23 nests are plotted
on the map & the contents of 7 others are known
(5 seen by helicopter & seen by the painters). These
are summarized below.
nest contents # nests
empty 1
1 young 12
2 young 15
3 young 1
contents unknown 1/30
In the above tabulation dead young were
counted with live young to give # of young per
nest. Since not all nests have been viewed from
above, it is possible that when this is done an
additional dead bird will be found. One problem
with any future recheck of nests we have flown
over in the helicopter is that such flights cause
some birds to fledge. We noted 2 cases of this.
If they do not return to the nest stack, a
subsequent count will reveal fewer young than