Gift

This was really violent O.O I like it! (If you click on any of my short stories you'll notice they're all super dark, so yeah...)
Anyway, I adore the rhyme scheme you've got going on in this. It sounds great! Your tone is really scary and hateful. You should retitle this "Threat to the Mockingbird" because that's how I see it.
However much I like this poem, there is one part I find a bit confusing:

But I'll always be the enemy

You never cause I'm a wreck

Oooh!

This was lovely, it had a wonderful flow to it! I myself liked the word choice.

Mockingbird, mock me not

You never cause I'm a wreck

Wow, that was a very interesting poem! Almost a little Slim Shady-esque.

(Ironically, in his song "Mockingbird," the very last line is "If that bird don't sing and that ring don't shine, I'mma break that birdies neck..."

Your line "I might just snap your little bird neck" instantly reminded me of that song! But if you're not a fan of him, don't be offended, he is considered one of the greatest lyricists/rhymers of all-time!

I agree with the previous review that it did get off to a little bit of an awkward/choppy start, but you can easily change it and make it flow much better. you have an obvious talent.

Also, I would make some very minor punctuation changes, add a comma in a few spots, etc. They're minor though, so I won't point them out.

All-in-all, a really nice work. Keep writing!!

Hi there, I don't believe I have reviewed for you before, so it is nice to meet you! You have here my favorite type of poetry, and the type I write the most of, so the fact that I like this poem says a lot, as I tend to be harshest on what I am most used to! I loved your use of rhythm and rhyme, though it was off on the first three lines, since they did not fall into the same rhyme scheme as the rest of the poem, and got you off to a bit of an awkward start. If you could condense this into one line I feel that the poem would be stronger, for example:

Mockingbird, Mock me not;
gap between what you've seen and though

I feel that this makes the poem flow much better from the beginning, which is the make or break time for a poem. The next thing I'd like to mention is the line "You never cause I'm a wreck." Cause is either not the right word here, or your grammar/syntax is off. I don't understand what you're trying to say, so I can't offer any suggestions on how to fix it. Even if it makes perfect sense to you, always remember that your reader is important also. "Your little bird neck" could be rephrased with some heavier vocabulary to make it sound less forced. Other than simple rhythm, my only suggestion would be to expand a bit on what you're trying to say, as the poem seems to rely much too heavily on uncertainties. Expanding more on your general idea by either adding to the middle or adding another stanza would help your reader greatly.
Keep writing, you're doing great!