Alaska Species Accounts, Part. 2, v4425
Page 31
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
P. DeBenedictis 1961 Stercorarius pomarinus 7 July Barrow, Alaska - went into a distraction display and was attacked by this same jaeger, again unsuccessfully. There were about 12 birds (1 group 8) at the head of Faresh lake but no many other non-territorial birds in the area from the hub to lines IETE. A nest with a very dark and a very light egg was found near Calidris pusilla Nest 18; the parents were only moderately vicious, and the (egg) nest found June 29 still has 1 egg. The pair that was opposite (east of) the FAA tower seems to have disappeared, Pairers moved across the road to the nest found by Hamilton. No groups of jaegers seen in the afternoon. 9 July There is a group of about 6 in Footprint lake. The pairs, although widely spaced are somewhat denser than I had suspected, about 17 pairs/sq mi in the area from VSTH Creek to the gas line. We found 85 2 egg nests today and saw 3 sitting birds which we were unable to check. One pair located earlier in the year seems to have disappeared and the nest could not be located. Two pairs I suspect are replacements for birds just earlier in the year, as they did not seem to have a nest.(I have been wrong on this before). The reaction of the birds to approach was variable, about 1/2 the pairs leaving us alone and the others fighting ferociously. Should check for black birds soon. All feeding seen today clearly involved burrowing and the jaegers did not seem to be having any trouble finding prey.