the azure jay is a large, bright blue jay native to a small range in south america. they are south america’s largest corvid, and like other corvids (jays, crows, ravens, and magpies), they are known for their intelligence and complex social structures. azure jays mainly feed on the seeds of the araucaria tree, but opportunistically feed on other seeds, fruits, and insects.

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though humans were once thought to be the only animals capable of planning for future events, scientists found that common ravens can pass these sorts of tests with flying colors. when given a tool that could be used to access a treat, the ravens took it and used it successfully. hours later, when given a lineup of objects they could choose from, the majority of ravens chose the tool, and held onto it for future use.

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the house crow is a medium-sized crow that is native to asia, but has introduced populations throughout the world. the house crow’s neck and chest are grayish-brown, the shade varying based on location. like other crows, house crows are omnivores and opportunistically feed on small animals, human scraps, and insects.

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a leucistic house crow, native to asia, perches on a ledge. while it was once believed that parent crows kicked white offspring out of the nest, that myth has been found to not be true – while abnormally colored crows may face social rejection, that usually happens once they have left the nest. leucistic crows do face other problems – they are easier targets for predators, and typically have weaker eyesight and feathers.

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the thick billed raven is a large corvid endemic to africa. thick-billed ravens are easily distinguished from other ravens by their massive beaks. like other ravens, they are opportunistic feeders, and will eat on carrion, small animals, insects, and more. they are considered by some to be the heaviest passerine in the world.

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the rook is a large species of crow native to europe and asia, with an established introduced population in new zealand. rooks are distinct from other crows by the bare facial patch surrounding their beak. rooks are known for their intelligence, and in captivity have displayed several forms of tool use and a basic grasp of gravity.

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the hooded crow is a medium-sized crow species found in parts of europe and asia. they are one of few crow species with large amounts of a non-black color on the body, making them easy to differentiate from other black crows. they were once considered to be the same species as the carrion crow, as they sometimes hybridize, but genetic testing proved they are distinct species.

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the tamaulipas crow is found in a relatively small range of northeastern mexico and parts of southern texas. this medium-sized crow is easily distinguishable from most other crows by their plumage; while it’s common for crows to have somewhat iridescent feathers, the tamaulipas crow has noticeable purple & blue coloration in the right light.

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