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1 June 2013 Biometrics and Sub-Specific Identification of White-Spotted Bluethroats Luscinia svecica cyanecula and L. s. namnetum During Autumn and Winter
Júlio Manuel Neto, Edna Correia
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Abstract

Detailed analyses of the biometrics of white-spotted bluethroats captured in the Iberian Peninsula and sub-Saharan Africa show that previous criteria for diagnosing subspecies are inadequate. This deficiency seems to result from feather wear during the breeding period and so new criteria are proposed for the migratory and wintering periods. Foreign recoveries in Portugal indicate that the new criteria work better during these periods but, a small proportion of misidentifications are still likely to occur. As bimodality is shown by biometric traits other than wing length, further refinements should consider the use of multiple traits as well as genetic markers.

Júlio Manuel Neto and Edna Correia "Biometrics and Sub-Specific Identification of White-Spotted Bluethroats Luscinia svecica cyanecula and L. s. namnetum During Autumn and Winter," Ardeola 59(2), 309-315, (1 June 2013). https://doi.org/10.13157/arla.59.2.2012.309
Received: 21 May 2012; Accepted: 1 September 2012; Published: 1 June 2013
JOURNAL ARTICLE
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