In a lot of fanfiction, it's often through a near - death experience. For example, Harry might be in a situation where he is facing a dragon that is about to attack him. In that moment of extreme danger, he somehow makes a mental connection with the dragon and realizes he can talk to it. This kind of life - or - death situation often unlocks hidden powers in the Harry Potter universe, and this could be one way he discovers his ability to talk to dragons.
Well, in some versions of this fanfiction, Harry might discover it by accident. For example, he could be in a situation where he's near a dragon and instead of the usual fear or aggression from the dragon, it seems to be communicating with him in a strange way. Maybe the dragon's eyes seem to be trying to convey a message, and Harry just somehow understands it, like he has an innate sense that he can pick up on the dragon's thoughts.
Another consequence is that it would change his relationships within Hogwarts. His friends might be a bit scared or in awe of him having such a unique ability. Some students might be jealous. Teachers would also have to figure out how to deal with this. For instance, Professor McGonagall might be worried about how this new ability would affect Harry's studies and his place in the school. And Harry himself would have to learn to control this ability and not let it go to his head, as it could easily make him become overconfident or reckless.
Well, it could change the plot in many ways. For example, the crows might act as spies for Harry, giving him information about the Death Eaters' whereabouts. They could also help him find hidden objects or secret passages. Maybe they warn him of impending danger.
Well, it could potentially give Harry an edge in gathering information. Ravens are often associated with mystery and knowledge in magical lore. Maybe he can learn secrets about the school or the Dark Arts from them, which would help him in his battles against Voldemort.
Well, it could change the plot in many ways. For example, he might be able to negotiate with them. Maybe he can convince them not to attack people, which would make Hogwarts a much safer place. He could also learn more about their origin and motives directly from them, instead of just speculating as others do.
Well, it could give him an edge in Herbology class for sure. He might be able to communicate with dangerous plants and figure out how to handle them better. Maybe he could even discover some hidden secrets about certain plants that are important for his adventures. For example, a plant might tell him where a hidden passage is or give him a clue about a mystery he's trying to solve.
Maybe he uses magic spells to bridge the communication gap. For example, a spell that can translate his thoughts into the language dinosaurs can understand, or vice versa.
Maybe he accidentally finds out when he is near some magnetic objects in Hogwarts. For example, he might notice that he can make the metal keys move towards him without using magic spells he already knew. It could be during a time when he is exploring an old, forgotten part of the castle where there are a lot of metal objects and strange magnetic fields.
In some fanfictions, it could be through an accidental encounter. Maybe he was in a situation where metal objects started to react to him unexpectedly, like when he was near a bunch of keys and they suddenly started to move towards him. This made him realize that he had this strange new power.
It could be that his training in magic somehow awakens his haki. As he delves deeper into advanced magic spells and combat training at Hogwarts, his body and mind start to develop this new ability. For example, during a particularly intense dueling session, he feels a strange energy coursing through him which he later realizes is haki. His professors might initially be baffled by this new power, but as he learns to control it, it becomes an asset in his battles against the forces of evil.