The variability of biometric measurements
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Within and between measurer consistency of measurement of auk biometrics was examined and variations between individuals that may equal reported differences between populations were pointed out.Abstract:
Barrett, R. T., M. Peterz, R. W. Furness and J. Durinck. 1989. The variability of biometric measurements. Ring. & Migr. 10: 13–16. Within and between measurer consistency of measurement of auk biometrics was examined. We point out variations between individuals that may equal reported differences between populations.read more
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The influence of food supply on the breeding ecology of Kittiwakes Rissa tridactyla in Shetland
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Some comments on the repeatability of measurements
TL;DR: In this article, a simple account is given of how to calculate repeatability and how to report the results, with particular emphasis on those caused by the relationship between repeatedability and the variability between specimens measured.
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Variation in measurements of Cory's shearwater between populations and sexing by discriminant analysis
TL;DR: Comparison of morphological data from several colonies of Cory's Shearwater confirmed that the Cape Verde subspecies C.d. edwardsii occupies a very distinct position relative to the Atlantic and the Mediterranean races.
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Morphological versus acoustic analysis: what is the most efficient method for sexing yelkouan shearwaters Puffinus yelkouan ?
Karen Bourgeois,Charlotte Curé,Jérôme Legrand,Elena Gómez-Díaz,Eric Vidal,Thierry Aubin,Nicolas Mathevon,Nicolas Mathevon +7 more
TL;DR: Two methods for sexing yelkouan shearwaters are tested: the classical morphological method and a new acoustic method, which can be sexed with 100% accuracy by measuring FC.
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A Discriminant Function for Predicting Sex in the Balearic Shearwater
TL;DR: Analysis indicated that head plus bill length and minimum bill depth were the most accurate variables in a discriminant function model, predicting sex with about 90% accuracy.
References
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The use of head and bill length to sex live gulls Laridae
TL;DR: L'etude biometrique (longueur totale du bec and de the tete) semble etre la plus utile des methodes en ce qui concerne les L.
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Measurements and weight changes of norwegian adult puffins fratercula arctica and kittiwakes rissa tri dactyl a during the breeding season
TL;DR: There was a steady increase with latitude in the size of Puffins and Kittiwakes breeding in Norway, and it is argued that this weight loss is voluntary and adaptive.
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Great Frigatebird Size Dimorphism on Two Central Pacific Atolls
TL;DR: Sexual size dimorphism in Great Frigatebirds (Fregata minor) on Johnston Atoll and Christmas Island is examined using univariate and multivariate analyses and morphological data are related to environmental variability and predictibility and the various published hypotheses on the evolution of sexual size Dimorphism are related.