Field notes, v1379
Page 367
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