Sometimes macaws are hybridized for the pet trade. Aviculturists have reported an over-abundance of female blue-and-yellow macaws in captivity, which differs from the general rule with captive macaws and other parrots, where the males are more abundant.[citation needed] This would explain why the blue and gold is the most commonly hybridised macaw, and why the hybridising trend took hold among macaws. Common macaw hybrids include the harlequin , miligold macaw and the Catalina known as rainbows in Australia

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拍攝者： Ksomsak