Alaska field notes, v4436
Page 197
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
J.D. Myers 1976 Storovarius pomnaius Barrow AK. 31 May pomnaius have arrived. yesterday they were not here, definitely. today they are all over tundra, going through territorial displays. Sensitio not terribly high yet, with v 5 1 June Where have they all gone? Saw very few out near LB site this morning. 2 June Back again, in number. there are still individuals behaving territorially, with flocks moving through in flocks. Have seen several of Lemming. Jaegers moved into Britten area and Bow Main today. GRID 2 tried to follow a pair of jaegers holding a territory on GRID 2, but was frustrated by size defended - includes all of grid and beyond, running from the creek to the ridge beyond the NW end of the grid. Measured on the map, size is ~1200 x 600 meters, or 66 hectares, which reduces to 1.5/km². Absurdly large. At first, in fact, I didn't comprehend how large it was and thought that there was no resident. But pair consists of one light phase (probably 8?) and dark phase 9, simplifying the tracking process. Nonetheless, because of the size of the area I had to give up this aim. The 8 seemed to be either sitting on the ground (seldom) or flying after an intruder. There were a few 8-9 interactions, including on territorial border display, the pair together parallel with necks arched and wings up, exposing white wing coverts. In another episode the 8 seemed to be soliciting - see jaeger tracking account. 4 June up to 30 jaegers in Britten pond area. during a.u., sitting on mounds. Another concentration located near junction of transects 8 and 9 (see map p 50 of journal). However there the concentration is of territorial individuals, no apparent to the Britten area group. 9 June See journal