Alaska field notes, v4438
Page 255
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
J Myers 1980 Calidris melanotos (land 3, NARL, Barrow, Alaska) 25 June cont'd I remained w/ this 9 until 1400 when Sordahl took over. During this swim she was hooded over 5 times in 283 minutes, once / 57 minutes. She had very few interaction with the 8, including only one RG and no squawk. Her 8 on foot began repeated display over a 2nd female. He largely ignored Redhead. So the trend continues. Returned at 1730 to take over from Sordahl. A remarkable evening on the 8 ignored her throughout the 8 hours I tracked. He had a 2nd female + was hooting over these incessantly. I noted because Redhead should be about to copulate for 3rd egg. Why does the 8 ignore her so completely? It is 100% consistent with the behavior of 8 toward other 99 we have tracked in this stage of laying PECULIATE! Equally remarkable is the fact that throughout the swim the 9 stayed within a 350m radius circle, straying over fewer than 0.25 ha. NOTE - Sordahl saw a Pomarine take GW:6W's nest today at 1600. 26 June 1330 began tracking GW:6W today, as she was being displayed to by 8, Redheads 8. She is in Mac area where this 8 was so active last night and probably was that 9. Briefly, her history: she began by laying on territory of 8 (map of 21 Jun). Briann + Tex tracked her during this period. She was detected making nut cups on 21 June + laid her first egg by 1630 that afternoon. Clutch completed by the morning of 25 Jun. But by that date 8 (again map of 21 Jun) had expanded his territory in that direction far enough to include her nest. Then 1600 hrs the pomarine struck. Late that night 8 began displaying incessantly to a 9 in her area, and I suspect it was her, especially given that he is displaying to her this a.m. Note: 25 Jun 1415 - GW:6W is crossing a boundary into 8's territory. 8, ad 8 are fighting at the boundary NOTE - whole melanotos scene exceedingly quiet today