Field notes, v1379
Page 77
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