Dean Portelli wrote:
the ventrum of the tail being a sooty black). The blue band appears in
all lighting conditions, with varying conspicuousness, but is a real
(not artefactual) feature.
Blue in bird plumage is almost always (?) a refraction effect rather
than a result of blue pigment as far as I can recall. Nonetheless, if
it's a refracted colour, it's 'real' and not an artefact.
--
=================================
Lawrie Conole
Senior Ecologist
Ornithology & Terrestrial Ecology
Ecology Australia Pty. Ltd.
Flora and Fauna Consultants
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FAIRFIELD VIC 3078 Australia
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