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It's not the same. When human ova are frozen in liquid nitrogen (which is something like -180 degrees), it's instantaneous, and there is absolutely no time for ice crystals to form. And, it's the ice crystals that pierce the cells and kill them. Freezing a chicken egg in a home freezer or outside on a cold night would NOT protect it like liquid nitrogen does, most likely.
Don't let that discourage you -- it would be an interesting experiment, and you never know, it might work. But, the other issue -- if the shell cracks, it's ruined, and I suspect you'll find most shells will crack, because the eggwhite will expand as it freezes. So, if you try, you've got to find a frozen one that didn't crack.
Also, when human ova are frozen for in vitro fertilization the eggs are not yet fertilized. They are fertilized after they are thawed and right before being implanted. Freezing after fertilization would kill any developing embryo.