Variation in the Timing of Breeding and Molt of the Lapland Longspur ("Calcarius lapponicus") in Alaska, with Relation to Differences in Latitude
Williamson FS and Emison W. 1971. Variation in the Timing of Breeding and Molt of the Lapland Longspur ("Calcarius lapponicus") in Alaska, with Relation to Differences in Latitude. BioScience. 21(12):701-707
The synchrony of events in the annual breeding and molt cycles of Lapland longspur is less marked on Amchitka than at more northern areas, indicating flexibility in this adaptation to life. Breeding activities peak about 15 days later at Amchitka than at Cape Thompson. The molting period is prolonged in the Amchitka population but individual molts require about 50 to 60 days, as in northern areas.
- Type
- Journal Article
- Authors
- Williamson, F; Emison, WB
- Units
- ARCN , BELA , CAKR , GAAR , KOVA , NOAT
- Keywords
- Abundance, AMNWR, Arctic, Breeding, Calcarius lapponicus, Interior Plains, Migration, Nest Site Selection, Northern, Pacific Mountain System, Passeriformes, Plumage, Rocky Mountain System, Southwestern, Sparrow, Western