Publication Type: | Journal Article |
Year of Publication: | 1981 |
Authors: | Atkinson, NK, Summers, RW, Nicoll, M, Greenwood, JJD |
Journal: | Ornis Scandinavica |
Volume: | 12 |
Issue: | 1 |
Date Published: | 1981 |
ISBN Number: | 00305693 |
Keywords: | Calidris, Calidris maritima, Ereunetes maritimus, Erolia maritima, Iceland, Scolopacidae, Xenus, Xenus cinereus |
Abstract: | Purple Sandpipers were virtually absent in June, numbers increased between July and November, and decreased in April and May. Birds which arrived in autumn remained within the area until they departed in spring, though some carried out short-distance movements. Many birds returned to the same winter quarters in successive years. The average proportion of first-year birds was 24%. It was estimated that the population was composed of 86% Norwegian-breeding birds, the remaining 14% may come from Iceland. 58% were males. Adults and first-years had similar bill lengths. Wing lengths of adults remained constant between October and May but decreased over the migration and breeding seasons. Half of the population completed moult of the primaries by the end of September. Mass was stable between late autumn and early spring. First-years and adults had similar masses, and both increased in mass during early May prior to emigration. |
URL: | http://www.jstor.org/stable/3675900 |
Short Title: | Ornis Scandinavica |
Taxonomic name: