I'm not sure if there is a specific 'Peter Parker x Mocking Bird' fanfiction with this exact plot. Fanfiction can cover a vast range of scenarios, but this particular one might be quite rare or not widely known. You could try searching on major fanfiction platforms like Archive of Our Own or FanFiction.net to see if it exists.
One possible plot could be that Peter Parker discovers Mocking Bird is pregnant. He then has to deal with the responsibility of being there for her while also keeping his secret identity as Spider - Man intact. There would be a lot of drama as they navigate their relationship in this new situation, and Peter might worry about protecting her and the unborn child from his enemies.
I'm not sure specifically if there is a fanfiction exactly about a 'black bird Misao being pregnant'. There are so many fanfictions out there that it would be difficult to say for certain without a more in - depth search in relevant fanfiction platforms or communities.
You can start by looking on large fanfiction platforms such as Archive of Our Own (AO3). They have a vast collection of fanfictions from various fandoms. Just use the search bar and type in 'black bird Misao pregnant' and see if any relevant stories pop up.
The tame bird is used to living in captivity, relying on humans for food and shelter. It may be more docile and accustomed to a restricted environment. The free bird, on the other hand, enjoys the freedom of the sky, flying wherever it wants, facing the challenges and uncertainties of the wild on its own.
The green bird was a kind of bird of happiness in mythology. There were different descriptions in different legends. In Journey to the West, the green bird was the incarnation of the Taishang Laojun, who prayed for his master's peace and happiness. And in 'Dream of the Red Chamber', the green bird was Jia Baoyu's pet, representing happiness and good fortune. However, it should be noted that the meaning of the blue bird in different myths may be different, so whether it is really a happy bird also needs to be understood according to the specific story background and setting.
The tame bird in the story can be seen as a symbol of a sheltered life. It's content with what it has been given by its human keeper. This is similar to how some people are satisfied with a simple, uneventful life. On the other hand, the free bird is a symbol of the untamed spirit. It stands for the idea that there is more to life than just the basics. It represents the longing for adventure, for seeing new horizons, and for experiencing the fullness of life without boundaries. It's about breaking free from the shackles of routine and convention to experience the vastness of the world, just as the free bird experiences the vastness of the sky.
There were a few novels about birds being reborn that could be recommended. One of them was " Little Sparrow Is Not Immortal." The protagonist of this book, Qin Yubing, was turned into a bird by Buddha. The specific type of bird needed the reader to read it for themselves. The other book was " Reborn into a Bird ", a fantasy romance novel that told the story of an unknown birdman. In addition, there was also a science fiction novel called " The Crow that Can Transmigrate." The main character was a crow that had the ability to transmigrate. These novels could be recommended for those who wanted to be reborn as birds.