Is existence a property? The way I became confounded was an example like this: a

Is existence a property? The way I became confounded was an example like this: a

Is existence a property? The way I became confounded was an example like this: a phoenix is a bird, it has feathers, and it is born from ashes, but it does not exist, whereas a penguin is a bird, has feathers, exists, and is born in snow. As in, existence and being born in snow are properties of penguins, but not of phoenixes. I feel there might be some mistake, but I certainly lack the expertise to puzzle through this on my own.

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