Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
R.E. Johnson
1968
Journal
May 20.
Anchutka Island, Alaska (cont.)
mountainous end of this island (1st time since I
arrived that I could see this far). The sun came
out in the late afternoon on the east end of the island.
May 21
Anschetka Island, Alaska
Visibility still better than normal. Can see the
west end of island (mtus) again and also L, the Sitkin &
Semisopochnoi Islands. A census of two small ponds
at 9AM near Mason Lake had 1 pair + 5 other &
Pintail ducks on one and 2 Red-breasted Loons on
the other. There were no birds on Mason Lake. Drove
to the Dry Meadow plots and noted a large number of
Longspurs (23 plottings on map) but only [illegible] other
species were in the area. A Rock Ptarmigan flew from
somewhere in the center of the area and a group of 7
Rosy Finches flew past the corners of the area.
During the previous census only 8 Longspurs
were plotted & one rosy finch. It appeared that
there were territorial disputes today & much aerial
display (glide & sing). Females are not seen often,
perhaps because they arrive later than males, but
they may simply be more secretive. Time will tell.
Noticed a male give his typical aerial flight & song
to a female only 10 ft. away do the same with only
a slight time lag between the two (both displays in
air together). This was the 1st female I have
noted giving a display. Looks like it could be a
sex ritual reinforcing the pair bond.
21