Frilly Color Palette

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Red-orange hotspot; front of frill

Last night I found a female frilly over a kilometer away from any other dragon that I had sampled. Though she is small, she is undoubtedly among the most fierce and almost never folds down her frill. She happened to be in shed (possible contributing to the excessive defensive behavior), so I took the opportunity to take macro shots of her scales. Look closely to see the cloudy margins where the old skin layer is separating from the new one. Although colors are generally confined to certain frill regions, frilly colorations are highly variable in brightness, saturation, hue, and boundaries of the color hotspots — to such an extent that I’m able to identify individuals by their color pattern. Even so, frillies transition from a lighter nocturnal coloration with a slight red hue to a darker diurnal coloration, possibly to enhance their deimatic display by contrasting a dark cryptic body coloration with a sudden explosion of frill color.

Handled with appropriate permits for scientific study; photographed after capture [5]

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White hotspot; front of frill; adjacent to mouth
Black hotspot; front of frill; above red hotspot
Splotched area; back of frill; below jawbone
Black and red-orange region; front of frill; near throat
Upper transition between black and red-orange hotspots; front of frill
Dorsum
Lower transition between black and red-orange hotspots; front of frill
Separation of new and old skin layer
Near red-orange hotspot; front of frill
Red-orange hotspot; front of frill
Near red-orange hotspot; front of frill
Belly

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