My guess is that we'll have a different type of bird besides the usual turkeys.
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Here we go!!!!
Ethereal Amagnae
This egg looks as solid as any other, but your fingers pass through it whenever you try to pick it up.
(day) (night)
Spoiler
Ethereal amagnae hatchlings are the cutest. Their round bodies are covered in perfectly white feathers, making them look like piles of fresh snow. They are quite cheerful, playing with anything and everything, squeaking and chirping at each other, having the best of times. All of this lasts only for the first few weeks. As soon as they start vanishing, they become more somber. They are less noisy and appear to be preoccupied with staring into space for indefinite amounts of time. Whenever the amagnaes disappear, they do so gradually. Their bodies become somewhat translucid until they are completely gone. Whenever they reappear, the process is reversed. The more they vanish, the less time it takes, until one day when they go from solid forms to nothingness in the blink of an eye. Whenever they come back from the other dimension they travel to, they look like they have not yet realized they returned to this world. This transition they go through is painless, and as they age, the ethereal amagnae hatchlings look more ghostly than real.
(f)
Spoiler
Ethereal amagnaes are said to be the ghosts of all the birds sacrificed as meals during various festivities. Experts in the matter, though, say they are simply a different breed, able to cross the veil that separates our world from other dimensions. If you are to pay close attention to one of these creatures, you could believe that both theories are true. You can not tell for sure, but at certain moments you swear the ethereal amagnae that currently sits next to you resembles that one turkey you cooked three winters ago for your aunt's birthday party. It is uncanny, and you really feel the need to apologize to the amagnae. You would like to inspect the creature more, just to be sure, but the amagnae has vanished soundlessly. When corporeal, the ethereal amagnae does not appear ghostly at all. Its white plumage makes it look delicate, even elegant, and it is definitely real. The bird pecks at the few seeds left on your window sill, proving it is alive. But it stares at you with its dark eyes a little too long to be comfortable, as if seeing into your soul and the feeling of being haunted returns.
Reaper Amagnae
This egg has several viciously sharp spikes growing out of it.
(f) (m)
Spoiler
Reaper amagnae hatchlings are cute, affectionate, and fortunately for the magi raising them, not yet covered in sharp spikes, though their hatchling down is uncomfortably pokey. This makes their demands for cuddles merely uncomfortable rather than actively painful. Magi should take care to train their hatchlings to express their affection in less physical ways, or suffer the consequences when their chick grows up. As hatchlings, reaper amagnae don't have much of their strange aura yet, and so any crops that happen to be in their proximity at most grow slightly faster. As such, they forage for themselves by hunting for bugs and small animals, and beg adults or their magi when they want tasty treats of perfectly ripened fruit and grains.
(m) (f)
Spoiler
Ethereal amagnaes are said to be the ghosts of all the birds sacrificed as meals during various festivities. Experts in the matter, though, say they are simply a different breed, able to cross the veil that separates our world from other dimensions. If you are to pay close attention to one of these creatures, you could believe that both theories are true. You can not tell for sure, but at certain moments you swear the ethereal amagnae that currently sits next to you resembles that one turkey you cooked three winters ago for your aunt's birthday party. It is uncanny, and you really feel the need to apologize to the amagnae. You would like to inspect the creature more, just to be sure, but the amagnae has vanished soundlessly. When corporeal, the ethereal amagnae does not appear ghostly at all. Its white plumage makes it look delicate, even elegant, and it is definitely real. The bird pecks at the few seeds left on your window sill, proving it is alive. But it stares at you with its dark eyes a little too long to be comfortable, as if seeing into your soul and the feeling of being haunted returns.