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dc.contributor.authorManning, T. H.
dc.date.accessioned2013-03-06T17:51:38Z
dc.date.available2013-03-06T17:51:38Z
dc.date.issued1964-08
dc.identifier.urihttp://hdl.handle.net/11122/1429
dc.description.abstractManning, T. H. 1964. Geographical and sexual variation in the Long-tailed Jaeger, Stercorarius longicaudus Vieillot. Biol. Pap. Univ. Alaska, No. 7. Pp. iii + 16 (Author's address: RR 1, Merrickville, Ontario, Canada) Statistical comparison of the color of the underparts of 474 Nearctic and 64 western and central Palearctic sexed specimens of Long-tailed Jaegers indicates that S. l. pallescens Loppenthin is a valid race ranging across the Nearctic and eastern Siberia to the Indigirka River. Spitsbergen specimens are also referable to this race; Iceland specimens belong to S. l. longicaudus. Females are significantly darker than males. The origin and migration of the two races are discussed. bills and wings of Nearctic males are shorter than those of females, and there are significant geographical differences within the Nearctic population. Regression and correlation statistics for wing and bill lengths are given and discussed. Thirty-two weighed specimens indicate that within populations weight is correlated with wing length but not with bill length.en_US
dc.publisherUniversity of Alaska. Institute of Arctic Biologyen_US
dc.relation.ispartofseriesBiological Papers of the University of Alaska;No. 7
dc.subjectColoren_US
dc.subjectWing and Bill measurementsen_US
dc.titleGeographical and Sexual Variation in the Long-Tailed Jaeger Stercorarius Longicaudus Vieilloten_US
dc.typeTechnical Reporten_US
refterms.dateFOA2020-01-24T15:08:29Z


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