Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
R.E. Johnson
1968
May 27 Amchitka Island, Alaska (cont.)
Journal
43
Ninety two bldg were searched and 16 active
nests were found. That is, 17.4% of all buildings had
active nests and 46.7% had either active or old
nests in them. Slightly more than half of the
buildings examined were quonset huts and yet less
than a third of the new nests were found in them. There
were also less old nests in quonset huts than in
other buildings but the difference was not nearly so
great. Percentage figures in the last two lines of the
previous page document these trends. One possible
reason for this great difference is that a lower
percentage of quonset huts contain suitable nest sites
(shelves hanging from wall are usually the only suitable
nest site in a quonset hut & these are absent from
many of them). When percentages are refigured on the
basis only those of huts with shelves (ie. none without
shelves), then the percentage with nests increases from
9.8% to 20% and the percent with nests (new or
old) increases from 37.3% to 85%. The percent
for new nests is still below the figure for "other bldge",
but the percent for all nests is higher. However
when buildings lacking good nest sites are excluded the figure
for all nests (new & old)
raises from 58.5% to 88.9% which
is similar to the quonset hut figure. However the
figure for new nests is now raised from 26.7% to
40.8% which is double that for quonset huts. It
quonset hut
is not clear why nests should lag behind