Ismar, SMH; Chong, NL; Igic, Branislav; Baird, K; Ortiz-Catedral, L; Fidler, AE; Hauber, Mark E.
Subtle sexual dimorphism and its perception in apparently monomorphic bird species warrant assessment of how birds identify the sex of conspecifics, particularly of prospective mates. Visual sensitivity and its potential co-variation with cryptic sexual dichromatism are still uninvestigated in most avian taxa. Using molecular sexing, reflectance spectrometry and perceptual modelling based on the sequencing of short wavelength visual pigments, we assessed the sex-specificity of coloration and...[Show more]
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