Blue-and-yellow macaws are from 81 to 91.5 cm long, weigh from 0.9 to 1.8 kg, and have a wing span of 104 to 114 cm. They are vibrantly colored, with blue on their backs and wings, yellow under parts, green forehead feathers, and green tips on the end of their wings. Their under-wing coverts and breast are yellow-orange and they have black beaks, throat, and legs. Their eyes are yellow and their facial area consists of bare white skin with several black feather lines around their eyes.
Range mass: 900 to 1814 g.
Range length: 81.28 to 91.44 cm.
Range wingspan: 104.14 to 114.3 cm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes alike
- Low, R. 1983. Amazon Parrots. London: The Bailisk Press.
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