Beetle green is usually a male thing. The only birds in my flock that have it are partridge Roos. The shimmer is generally testosterone driven.
Of course it is much more noticeable in ' smooth ' feathers, which is why you will only see it in tail ribbons and ' osprey ' plumage in wing tips.
Of course it is much more noticeable in ' smooth ' feathers, which is why you will only see it in tail ribbons and ' osprey ' plumage in wing tips.
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