That bird is the mockingjay! OMG, you didn't know that that bird is the very bird that symbolized rebellion, the very bird that <PERSON> wore on a pin as her token? It is the very symbol of the series! And now with a calmer tone, I explain to you that that bird is a result of a female mocking bird, a natural animal, making babies with a male jabberjay, a muttation (still don't know why they add the extra t) spawned in the labs of the Capitol as a weapon against the Districts during the first rebellion. The Capitol released the birds when they found out that they were ineffective, as the rebels just sent them home with lies. The Capitol had underestimated a creature's desire to live, so thus mockingjays became. They are a creature that the Capitol never planned on existing, and it is like <PERSON> and her sparking the rebellion. They never wanted that. And that is also why <PERSON> is the Mockingjay in the book, which is fittingly titled Mockingjay.
The mockingjay is a species of bird that was created through the accidental mating of jabberjays and mockingbirds. 247
Black in color with white patches on the undersides of their wings, Mockingjays are famous for their ability to mimic a wide range of sounds produced by humans. When <PERSON> wore a pin bearing an image of this bird in the 74th Hunger Games, it angered the Capitol; the bird's very existence was a result of a mistake on the Capitol's part, and it represented a slight against them. This association with the bird later caused <PERSON> to be dubbed "The Mockingjay", the symbol and leader of the Second Rebellion
Mockingjays have a certain level of symbolism in Panem, though the nature of that symbolism can vary significantly. <PERSON> refers to the birds as "something of a slap in the face to the Capitol". Interestingly, this musing came before the 74th Hunger Games competition actually began, which suggests that the "rebellious" symbolism of the mockingjay was already established - or at least implied - before <PERSON> even arrived on the scene. For <PERSON> herself, they are a reminder of her father, and later of <PERSON>.
The mockingjays are not actually gold, that's just the pin that <PERSON> gave <PERSON>. Just to let you know, because you call it a "golden bird." And the pin originally belonged to <PERSON>'s aunt. 247