EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Irruptive migration of common redpolls



Irruptive migration of common redpolls



Condor 101(2): 195-204



We do not know whether the movements of irruptive migrants are fundamentally different from more conventional migration of birds to their wintering areas because irruptive migration has never been thoroughly described for any species on a continent-wide scale. We use data from a citizen-based monitoring program, Project FeederWatch, to describe the patterns of movements of redpolls (principally Carduelis flammea) across North America in 1993-1994, the winter of a major irruptive migration. Although redpolls moved into new areas during this irruptive migration, the normal wintering range was not completely abandoned. In fact, redpolls were more prevalent in the southern part of their normal wintering range in an irruption year than was typical in non-irruption years. There also was no indication that the majority of the North American population of redpolls moved continuously through the winter: although redpolls peaked in prevalence at different times across the continent, their spring departure was relatively synchronous across the entire continent. Group sizes were typically smaller the later redpolls arrived in a region, also suggesting that the entire redpoll population did not move continuously. In contrast to a non-irruptive migrant, the American Tree Sparrow (Spizella arborea), redpolls arrived at feeders in a given region later but reached peak densities more quickly. Our results suggest that the irruptive migration of redpolls is more allied to conventional winter migration than to nomadism.

(PDF emailed within 0-6 h: $19.90)

Accession: 010885884

Download citation: RISBibTeXText

DOI: 10.2307/1369983



Related references

An irruptive movement of mealy redpolls. Report Fair Isle Bird Observatory, 25: 68-70, 1972

Recaptures of redpolls: movements of an irruptive species. Journal of Field Ornithology, 542: 146-151, 1983

No evidence of genetic differentiation between lesser redpolls Carduelis flammea cabaret and common redpolls Carduelis f. flammea. Avian Science. December; 24: 237-244, 2002

Why some herbivores are destined to be rare A comparative study of irruptive and non-irruptive species. Bulletin of the Ecological Society of America 75(2 PART 2): 50, 1994

Advances in the study of irruptive migration. Ardea 94(3, Sp. Iss. SI): 433-460, 2006

Irruptive migration of jay, Garrulus glandarius. Var Fagelvarld 44(5): 261-268, 1985

Ecological aspects of irruptive bird migration in northwestern Europe. Proc Internatl Ornithol Congress 13: 780-794, 1963

Common redpolls feeding on algae. British Birds. June; 916: 240, 1998

Food consumption of common redpolls. Loon, 623: 166-167, 1990

Common redpolls on Roan Mountain. Migrant, 503: 65-66, 1979

Rare earth elements in the Sudbury Nickel Irruptive; comparison with layered gabbros and implications for nickel irruptive petrogenesis. Economic Geology and the Bulletin of the Society of Economic Geologists 74(3): 590-605, 1979

Corticosterone and irruptive migration in free-living mountain white-crowned sparrows. American Zoologist 38(5): 23A, 1998

Common redpolls nesting at Edmonton, Alberta. Canadian Field Naturalist, 891: 64-65, 1975

Vocalizations of common, lesser and Arctic redpolls. Dutch Birding, 111: 9-15, 1989

Identifying common and hoary redpolls in winter. Birding. December; 276: 446-457, 1995